Trade Remedies & Tariff Law

U.S. trade remedy law gives the federal government five distinct tools to impose tariffs and trade restrictions: antidumping duties (foreign goods priced below market — penalties routinely reach 20–200%+), countervailing duties (offsetting foreign government subsidies), Section 201 safeguards (temporary relief for industries injured by import surges), Section 232 (national security — used to impose 25% steel / 10% aluminum tariffs in 2018), and Section 301 (retaliation against unfair trade practices — the basis for $300B+ in China tariffs starting in 2018). The Trump administration's "Liberation Day" tariffs (E.O. 14257, April 2, 2025) represented the broadest use of emergency IEEPA authority in modern history, imposing sweeping tariffs on virtually all trading partners — but the Supreme Court struck down the IEEPA-based reciprocal tariffs 6-3 in Learning Resources, Inc. v. Trump, 607 U.S. ___ (Feb. 20, 2026) (Roberts, C.J.), holding that IEEPA does not authorize tariffs under the major questions doctrine. Section 232 (national security) and Section 301 (unfair trade practices) tariffs were unaffected and remain the operative authorities for any continuing import restrictions. The primary agencies are USTR (trade negotiations and Section 301 investigations), Commerce (antidumping and countervailing duty calculations), and the ITC (injury determinations). CBP enforces duties at the border. Businesses importing goods face exposure on multiple tracks simultaneously — a product can face both antidumping duties and Section 301 tariffs stacked on top of each other, as is common with Chinese-origin goods.

Current Law (2026)

Parameter	Value
Core statutes	Tariff Act of 1930 (Smoot-Hawley, as amended); Trade Act of 1974; Trade Agreements Act of 1979; Trade Expansion Act of 1962
Primary agencies	USTR (trade negotiations/Section 301), Commerce (antidumping/CVD), ITC (injury), CBP (enforcement)
Trade agreements	USMCA (N. America), bilateral FTAs (20 countries), WTO membership
Tariff revenue	~$80-100B/year (higher with 2018-2025 tariff actions)
Antidumping orders	~400+ active AD/CVD orders
Section 301 tariffs	~$350B in Chinese imports subject to additional duties (25-100%)
Section 232 tariffs	25% on steel, 10% on aluminum (global, with exceptions)
De minimis threshold	$800 (shipments below this enter duty-free)

Legal Authority

19 U.S.C. § 1304 — Marking of imported articles (every imported article must be conspicuously marked with its country of origin in English; CBP enforces marking requirements)
19 U.S.C. § 1307 — Convict/forced labor (goods produced with convict, forced, or indentured labor may not be imported; CBP issues Withhold Release Orders against suspected forced labor imports; the Uyghur Forced Labor Prevention Act creates a rebuttable presumption for Xinjiang goods)
19 U.S.C. § 1337 — Section 337 / ITC exclusion (ITC investigates unfair practices in import trade, primarily patent infringement; may issue exclusion orders barring infringing products from entering the U.S.; in rem remedy — applies at the border)
19 U.S.C. § 1671 — Countervailing duties (if Commerce determines that a foreign government is providing subsidies to exporters, and ITC determines U.S. industry is materially injured, CVDs are imposed to offset the subsidy)
19 U.S.C. § 1673 — Antidumping duties (if Commerce determines that foreign merchandise is being sold in the U.S. at less than fair value — "dumped" — and ITC determines U.S. industry is materially injured, AD duties are imposed equal to the dumping margin)
19 U.S.C. § 2411-2417 — Section 301 (USTR may take action against foreign country practices that are unreasonable, discriminatory, or violate trade agreements; includes imposing duties, fees, or restrictions; used extensively for China technology/IP tariffs 2018-present)
Trade Expansion Act § 232 (19 U.S.C. § 1862) — National security tariffs (President may restrict imports that threaten national security; basis for steel/aluminum tariffs imposed in 2018)
19 U.S.C. § 3301-3573 — NAFTA Implementation (now largely superseded by USMCA but original statutory framework; USMCA Implementation Act of 2020 at 19 U.S.C. § 4501+)
19 U.S.C. § 4001-4302 — Trade Promotion Authority / TPA (Congressional framework for fast-track approval of trade agreements; negotiating objectives; Congressional approval procedures)

How It Works

U.S. trade law provides several mechanisms to protect domestic industries from unfair or injurious foreign competition, while also implementing trade agreements and managing the tariff schedule.

The two most-used tools are antidumping (AD) and countervailing duties (CVD), both administered jointly by the Commerce Department and the International Trade Commission. When foreign manufacturers sell in the U.S. below their home-market price or below cost (dumping), or when foreign governments subsidize their exporters (subsidies), affected U.S. industries petition Commerce and the ITC for relief — Commerce calculates the dumping margin or subsidy rate; the ITC determines material injury. Affirmative findings trigger import duties that can run 10–300%+ and remain in place indefinitely through annual administrative reviews; over 400 AD/CVD orders are currently in effect, covering everything from steel to shrimp to solar panels. For patent-driven IP disputes, Section 337 of the Tariff Act gives the International Trade Commission authority to issue exclusion orders directing CBP to block infringing imports at the border — a powerful in rem remedy that applies to all imports of the infringing product; these cases proceed in 12–18 months.

The most consequential unilateral tools are Sections 301 and 232. Section 301 (19 U.S.C. §§ 2411–2417) authorizes the USTR to investigate and respond to foreign practices that are unreasonable, discriminatory, or violate trade agreements; the 2018 investigation of China's technology transfer practices, IP theft, and industrial subsidies produced tariffs on approximately $350 billion in Chinese imports — 25% on most goods, rising to 50% on semiconductors and solar cells and 100% on electric vehicles — the most extensive Section 301 action in history. Section 232 (19 U.S.C. § 1862) lets the President restrict imports that threaten national security; in 2018, 25% tariffs on steel and 10% on aluminum were imposed globally, upheld by the Court of International Trade despite ongoing debate about whether commercial goods constitute security threats. Beyond these remedies, every imported product is classified under the Harmonized Tariff Schedule of the United States (HTSUS), with MFN rates for WTO members, preferential rates under FTAs, and Column 2 punitive rates for non-MFN countries (Cuba, North Korea). The Uyghur Forced Labor Prevention Act (2021) adds a rebuttable presumption that goods with Xinjiang-region inputs are made with forced labor and barred under § 1307 — CBP enforces this through Withhold Release Orders that hold shipments until importers prove their supply chain is forced-labor-free. The $800 de minimis threshold — which allowed low-value e-commerce shipments to enter duty-free — was eliminated for Chinese-origin packages in March 2026, ending the duty-free window Temu and Shein had exploited for years.

How It Affects You

If you're a consumer buying goods in 2025-2026: You're experiencing the most significant tariff increase in generations. The 2025 "Liberation Day" tariffs established a 10% baseline tariff on virtually all U.S. imports — meaning the manufacturing cost of essentially every imported consumer product went up at least 10% overnight. Goods from China face 25-145% additional Section 301 tariffs stacked on top. The effect is embedded in product prices, not listed separately; retailers typically don't label what portion of a price is tariff-driven.

Category-specific impacts you're likely feeling: (1) Consumer electronics (laptops, smartphones, headphones) — many components and finished goods from China are subject to 25%+ Section 301 tariffs; Apple and other manufacturers have been relocating production to India/Vietnam but supply chain shifts take years; (2) Clothing and shoes — U.S. tariff rates on apparel were already among the highest in the developed world (15-32% on many categories) before Section 301 additions; Chinese-made garments now often face 45-60%+ combined rates; (3) Appliances — 25% Section 232 steel tariffs increased domestic appliance manufacturing costs as well as costs of imported appliances; (4) E-commerce from China (Temu, Shein): Trump's executive order eliminating de minimis treatment for packages from China/Hong Kong in March 2026 ended the practice of ordering small shipments from Chinese sellers duty-free under the $800 threshold. These shipments now face duties; prices on Chinese e-commerce platforms have risen accordingly. Returns and customs delays may also increase.

If you're a small or mid-size importer: Calculate your actual tariff stack before pricing products. A Chinese-made product may face: (1) base MFN tariff rate (from the Harmonized Tariff Schedule); plus (2) Section 301 China tariffs (25% for most goods, 50% for solar/semiconductors, 100% for EVs); plus (3) Section 232 tariffs if the product contains steel or aluminum; plus (4) a 10% Liberation Day baseline under the executive order — though some of these stacked provisions interact; work with a licensed customs broker to calculate your actual landed duty rate.

Country of origin is now more critical than ever. A product assembled in Vietnam using Chinese components may not qualify as Vietnamese-origin — CBP applies substantial transformation rules. If the Chinese content is too high, the product retains Chinese origin and faces Section 301 tariffs even if final assembly was elsewhere. CBP's binding ruling process (form CF-4645, response typically within 30 days) gives you legal certainty on classification and origin before you import. Customs brokers can request rulings on your behalf. For forced labor compliance (Uyghur Forced Labor Prevention Act), any product with Xinjiang-region inputs must be accompanied by documentation proving the input was not made with forced labor — a detailed supply chain trace, not just a supplier attestation.

Practical steps for tariff management: (1) request a binding tariff classification ruling from CBP for any product where classification is ambiguous; (2) evaluate first-sale valuation — if you buy from a middleman who bought from the manufacturer, you may be able to use the manufacturer's (lower) price as the customs value; (3) consider duty drawback — if you import components and later export finished goods, you can recover 99% of duties paid on the imported components; (4) evaluate Foreign Trade Zones for high-volume operations — goods in an FTZ aren't subject to duty until they enter U.S. commerce, giving you flexibility on when to pay duties.

If you're a domestic manufacturer: The tariff regime of 2025-2026 presents both protection and input-cost complications. On protection: if you're competing against Chinese imports, the Section 301 tariff stack creates significant price headroom — domestically produced goods that previously couldn't compete on price may now be competitive. On inputs: if your manufacturing process uses imported steel, aluminum, components, or materials from China, your own costs have risen. The ITC's exclusion process allows manufacturers to petition for exclusion of specific imported inputs from Section 301 or Section 232 tariffs — exclusions are granted when: (a) the product is not available domestically in sufficient quantity or quality; and (b) the importer's requested exclusion wouldn't undermine the tariff's purpose. Exclusion petitions are filed at USTR's portal (ustr.gov for Section 301) or Commerce's portal (for Section 232); the process takes 3-6 months and exclusions are typically granted for 1-2 years.

If you want to petition for AD/CVD protection against unfairly priced imports injuring your industry: petitions are filed with Commerce (for the dumping/subsidy investigation) and the ITC (for the injury determination) jointly. The American Institute for International Steel and the Coalition for a Prosperous America are examples of industry coalitions that have funded successful AD/CVD petitions. A petition requires evidence of: (1) the dumping margin or subsidy amount; (2) the volume of imports and price suppression effects; and (3) injury to the U.S. industry measured by lost market share, declining employment, and reduced profitability. Law firms specializing in trade practice (Wiley Rein, Steptoe & Johnson, Hogan Lovells) handle petition filings; costs typically run $100,000-$500,000 for a contested case through to final order.

State Variations

Trade and tariff law is exclusively federal. However:

State "Buy American" preferences in procurement can interact with trade agreements
State economic development programs sometimes conflict with trade obligations
Some states have been disproportionately affected by tariff actions (agriculture-heavy states impacted by retaliatory tariffs)

Implementing Regulations

19 CFR Part 0 — Transferred customs functions (Treasury and DHS authority)
19 CFR Part 10 — Articles conditionally free (tariff classification, duty-free entries, preferential tariff treatment, GSP claims, reimported articles, Korea/other FTA origin and verification rules)
19 CFR Part 113 — CBP entry and customs bonds (foreign trade zone operator bond conditions)
19 CFR Part 141 — Entry of merchandise (surety on customs bonds)
15 CFR Part 705 — Effect of Imported Articles on the National Security (Section 232): Commerce's procedural regulations for conducting Section 232 investigations — the process by which imports can be found to threaten national security and become subject to tariffs or quotas under 19 U.S.C. § 1862:
- § 705.3 — Initiating an investigation: a Section 232 investigation may be commenced by (1) the head of any executive department or agency (e.g., DOD Secretary requesting review of steel), (2) application by an interested party (a domestic industry), or (3) on the Secretary of Commerce's own motion; once commenced, Commerce conducts the investigation and must report to the President within 270 days of initiation
- § 705.4 — Criteria for determining effect on national security: the Secretary must consider: (1) the domestic production needed for projected national defense requirements; (2) the capacity of domestic industries to meet those requirements; (3) existing and anticipated availabilities of the human resources, products, raw materials, and other supplies essential to national defense; (4) growth requirements of domestic industries; and (5) the impact of foreign competition on those industries; the criteria are broad enough to encompass virtually any manufacturing sector, which is why Section 232 has been applied to steel, aluminum, automobiles, semiconductors, and other industries
- § 705.7–705.8 — Investigation process and hearings: Commerce may (but need not) hold public hearings to gather information; interested parties may file written submissions; the process is less formal than ITC antidumping proceedings but allows industry participants to present evidence; the confidential information protection provisions (§ 705.6) allow companies to submit sensitive trade data that affects national security analysis without public disclosure
- § 705.10 — Report and recommendation: after completing the investigation, Commerce prepares a report finding either that imports are or are not threatening national security, with recommended remedies; the report is submitted to the President; if the finding is that imports threaten national security, the President has 90 days to decide whether to take action and what form (tariffs, quotas, other restrictions)
- § 705.11 — Presidential determination and action: the President may impose any remedy deemed necessary, including tariffs (as in 2018 steel/aluminum), quantitative quotas, licensing requirements, or other restrictions; the remedy is imposed by Presidential Proclamation with immediate effect; judicial review is limited — courts have generally upheld Section 232 actions as a broad delegation of executive trade authority; the President may also negotiate alternative agreements (such as the "quota" arrangements with Canada, Mexico, Korea, Japan, and the EU for steel) as a substitute for or modification of tariffs
Section 232 investigations and resulting tariffs have been some of the most economically significant trade actions of the 21st century. The 2018 steel (25%) and aluminum (10%) tariffs remain in place globally; the 2025 "Liberation Day" tariffs dramatically expanded Section 232's practical application alongside IEEPA-based tariffs. The Commerce Section 232 process is faster and requires less procedural formality than ITC trade remedy investigations — the 270-day statutory deadline, flexible criteria, and Presidential discretion make it a preferred tool for rapid trade restrictions with national security justifications. Critics argue the criteria are so broad that virtually any import can be characterized as a national security threat; proponents argue that broad criteria are necessary to address evolving dependencies in critical supply chains. Recent investigations: Section 232 investigation on automobiles and auto parts (2018, not yet acted upon as of 2026); investigation on titanium sponge (2024); ongoing review of critical minerals.
31 CFR Part 9 — Effects of Imported Articles on the National Security (Treasury): legacy regulations implementing 19 U.S.C. § 1862 from the period when the Treasury Department administered Section 232 investigations prior to the authority's transfer to the Department of Commerce. The current operative Section 232 investigation procedures are at 15 CFR Part 705 (Commerce); however, 31 CFR Part 9 remains in the CFR and may still apply to any Treasury-originated investigation. Key provisions:
- § 9.3 — Investigation trigger: the Treasury Assistant Secretary initiates investigation on request of any executive department or agency head, on application by an interested party, or on the Secretary's own motion; the government-initiated track is how most modern § 232 investigations begin (DoD or an industry association approaches Commerce/Treasury)
- § 9.4 — National security criteria: factors include domestic production capacity needed for projected national defense requirements, capacity of domestic industries to meet those requirements, availability of human resources and raw materials essential for national defense, and the impact of foreign competition on domestic industry growth; these same broad criteria appear in both 31 CFR Part 9 and 15 CFR Part 705
- § 9.8 — Emergency action: in emergency situations, or when national security interests require it, the Secretary may vary or dispense with any procedural requirements and formulate conclusions without the full investigative process — a streamlined authority that has been used to accelerate action on perceived urgent security threats

Pending Legislation (119th Congress)

HJRES 150 — Would terminate the national emergency declared to impose global tariffs (EO 14257), removing its statutory framework. Status: Introduced.
HR 6888 — Trump Tariff Transparency Act. Would require SBA and BEA to publish quarterly estimates of how post-January 2025 tariffs cost consumers and small businesses. Status: Introduced.
HR 3306 (Rep. Raskin, D-MD) — Truth in Tariffs Act. Would require sellers to separately display tariff surcharges from certain presidential tariffs, enforced by the FTC. Status: Introduced.
HR 4962 (Rep. Scholten, D-MI) — Toll of Tariffs Act of 2025. Would require the ITC to study how executive-order tariffs since January 2025 affected inflation. Status: Introduced.
S 172 (Sen. Scott, R-FL) — Stopping Adversarial Tariff Evasion Act. Would treat goods made by foreign-adversary-linked parties as originating in adversary countries. Status: Introduced.
S 4093 — Tariff Refunds for Working Families Act. Status: Introduced.

See also Food, Agriculture & Tariff Policy for sector-specific tariff bills.

Recent Developments

Section 301 China tariffs have been maintained and expanded — EVs at 100%, semiconductors at 50%, solar cells at 50%, steel/aluminum at 25%, batteries at 25%, with additional categories escalating
The de minimis ($800) exemption is under increasing scrutiny as Chinese e-commerce platforms (Temu, Shein) use it to ship millions of packages duty-free, potentially evading tariffs and safety standards
Forced labor enforcement under UFLPA has resulted in thousands of shipments detained at the border
Section 232 steel and aluminum tariffs remain in place globally with some country-specific modifications — companies increasingly use foreign trade zones to manage tariff exposure
In March 2026, the Commerce Department issued preliminary results in the antidumping duty administrative review of certain steel racks from China (2023-2024 period), finding sales below normal value, and postponed preliminary determinations in countervailing duty investigations on van-type trailers from Canada, China, and Mexico.
In March 2026, USDA's Foreign Agricultural Service proposed amendments to the Dairy Tariff-Rate Quota Import Licensing Program, updating regulations for annual licenses to import dairy articles under tariff-rate quotas. The ITC also published determinations on ferrovanadium from China and South Africa.
USMCA's dispute resolution mechanisms have been actively used, including the U.S.-Mexico automotive rules-of-origin dispute
Also in March 2026, Commerce issued a preliminary affirmative countervailing duty determination on freight rail couplers from India, finding countervailable subsidies being provided to Indian producers and exporters.
In March 2026, the ITC self-initiated two investigations directed by Congress: Investigation No. 332-609 on the effects of revoking China's Permanent Normal Trade Relations (PNTR) status on the U.S. economy, and Investigation No. 332-610 on the impact of China's state support and pricing practices in the biotechnology sector. Commerce also continued antidumping and countervailing duty orders on ceramic tile from China.
In early March 2026, Commerce continued AD/CVD orders on carbon and alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova, and Trinidad and Tobago after sunset review; initiated five-year sunset reviews of multiple AD/CVD orders; determined circumvention of AD/CVD orders on oil country tubular goods from China through completion in Thailand; and instituted new AD/CVD investigations on large diameter graphite electrodes from China and India.
In late February 2026, Commerce continued antidumping duty orders on electrolytic manganese dioxide from China; issued preliminary affirmative countervailing duty determinations on crystalline silicon photovoltaic cells from India, Indonesia, and Laos (with critical circumstances findings); finalized CVD reviews on large diameter welded pipe from Türkiye and organic soybean meal from India; and issued preliminary antidumping results on lined paper from India and off-the-road tires from India.
In February 2026, a NAFTA Article 1904 Binational Panel issued its decision on remand in the softwood lumber products antidumping case from Canada, continuing the long-running trade dispute over Canadian lumber imports.
In late February 2026, Commerce finalized antidumping duty review results on wood mouldings from China, granular PTFE resin from India, and crystalline silicon photovoltaic products from Taiwan.
In mid-February 2026, Commerce finalized CVD review results on common alloy aluminum sheet from Bahrain, postponed preliminary LTFV determinations on crystalline silicon photovoltaic cells from India/Indonesia/Laos, and proposed revisions to swordfish and shark limited access permit termination dates for Atlantic highly migratory species.
In mid-February 2026, the Court of International Trade issued its final judgment sustaining Commerce's amended results in the antidumping review of circular welded steel pipes from Thailand, and Commerce postponed the preliminary CVD determination on fresh mushrooms from Canada.
In mid-February 2026, Commerce finalized the scope of the antidumping duty order on fresh tomatoes from Mexico, issued preliminary AD results on stainless steel flanges from India, postponed LTFV determinations on dissolving pulp from Brazil and Norway, and finalized CVD reviews on aluminum foil from China and corrosion-resistant steel from South Korea.
In mid-February 2026, Commerce initiated CVD investigations on citric acid and citrate salts from Canada and India, and the ITC made determinations on hard empty capsules from Brazil, China, India, and Vietnam.
In early February 2026, Commerce finalized an affirmative CVD determination on float glass from China and issued preliminary LTFV determinations on silicon metal from Australia and Norway.
In January 2026, Commerce issued final affirmative AD and CVD determinations on polypropylene corrugated boxes from China; preliminary affirmative CVD determinations on hardwood and decorative plywood from China, Indonesia, and Vietnam (with critical circumstances for China); preliminary LTFV determination on fiberglass door panels from China; and preliminary affirmative CVD determination on L-lysine from China.
In January 2026, the ITC instituted a formal enforcement proceeding on pre-stretched synthetic braiding hair from China, enforcing the existing limited exclusion order and cease-and-desist orders.
In January 2026, the President issued executive orders adjusting imports of processed critical minerals and their derivative products, and adjusting imports of semiconductors, semiconductor manufacturing equipment, and their derivative products into the United States — imposing new tariff and trade measures to strengthen domestic supply chains.
The White House released a fact sheet in early 2026 outlining economic deal terms negotiated by President Trump, part of the administration's broader bilateral trade negotiation strategy.
In April 2026, the White House published fact sheets detailing President Trump's actions imposing temporary import tariffs on various product categories, including proclamations adjusting imports of pharmaceuticals and pharmaceutical ingredients, and strengthening tariff actions on aluminum, steel, and copper. The U.S. current-account deficit narrowed by $48.4 billion (20.2%) to $190.7 billion in Q4 2025 according to BEA data.
The Trump administration finalized a trade deal with Indonesia in February 2026, part of a series of bilateral agreements aimed at achieving "reciprocal trade" and reducing trade deficits with Southeast Asian trading partners.
In late March 2026, BEA released the advance estimate showing real GDP increased at an annual rate of 1.4 percent in Q4 2025, reflecting a slowdown from prior quarters amid trade policy uncertainty.
In March 2026, President Trump issued an executive order continuing the suspension of duty-free de minimis treatment for certain imports, maintaining the restriction on low-value shipments that had previously entered the U.S. without duties through the de minimis threshold.
In early March 2026, President Trump signed executive orders ending certain tariff actions while simultaneously modifying duties to address threats from Russia, adjusting the trade policy framework in response to evolving geopolitical conditions.
In a major trade policy shift, President Trump announced a 10-percent baseline tariff on all U.S. imports in early 2026, resetting tariff policy and marking the broadest use of presidential tariff authority in modern history.
Market analysts noted that the administration's tariff announcements contributed to significant Wall Street volatility, with investors pricing in uncertainty over retaliatory measures from trading partners and potential impacts on supply chains.
In February 2026, the White House announced a "historic trade deal" with India, with the United States applying an 18-percent reciprocal tariff rate under Executive Order 14257, representing the administration's bilateral approach to reducing trade deficits with major trading partners.
In February 2026, President Trump signed a proclamation temporarily increasing the U.S. tariff-rate quota for lean beef imports, framing the move as ensuring affordable beef for American consumers while managing trade flows with cattle-producing nations.
In December 2025, President Trump signed a proclamation adjusting imports of timber, lumber, and their derivatives, modifying tariff rates as part of the administration's ongoing use of presidential trade authorities to manage commodity flows and protect domestic producers.
February 20, 2026 — Learning Resources, Inc. v. Trump, 607 U.S. ___: the Supreme Court held 6-3 (Roberts, C.J.) that IEEPA does not authorize the President to impose tariffs, vacating E.O. 14257 (the April 2025 "reciprocal tariff" order) and related IEEPA tariff orders. The Court applied the major questions doctrine — extending the framework from West Virginia v. EPA (2022) and Biden v. Nebraska (2023) into the trade context — and read IEEPA's authority to "regulate… importation" not to include the distinct power to tax imports, a core congressional function. Section 232 (Trade Expansion Act of 1962) and Section 301 (Trade Act of 1974) tariffs were not addressed and remain in force; the administration has shifted toward those authorities for continuing trade actions. The decision is the first major judicial limitation on IEEPA in the statute's history. The "10% baseline" tariff to the extent it rested on IEEPA is invalidated; sector-specific Section 232 tariffs (steel, aluminum, copper, semiconductors, critical minerals) are unaffected.