Section 301 — Unfair Trade Practices & China Tariffs

Section 301 of the Trade Act of 1974 (19 U.S.C. §§ 2411–2420) gives the U.S. Trade Representative (USTR) the authority to investigate unfair foreign trade practices and impose unilateral retaliatory measures — tariffs, fees, or import restrictions — against countries that violate U.S. trade agreement rights, burden U.S. commerce, or engage in unreasonable or discriminatory trade practices. Section 301 is the legal foundation for the most sweeping tariff actions in modern American history: beginning in 2018, USTR used a Section 301 investigation of China's technology transfer policies, intellectual property theft, and industrial subsidies to impose additional duties on approximately $370 billion in Chinese imports — tariffs that have ranged from 7.5% to 100% depending on product category and have been maintained, modified, and in many cases escalated by both the Biden and Trump administrations. As of April 2026, Section 301 tariffs on Chinese goods remain the single largest tariff action in U.S. history by value. For how these tariffs interact with other trade remedies, see antidumping and countervailing duties and the WTO dispute settlement framework. The statute also provides for "Special 301" (an annual review of foreign IP protection) and "Super 301" (expired) provisions. USTR maintains ongoing Section 301 investigations and can expand or modify tariff actions based on foreign government responses or changed circumstances.

Current Law (2026)

Parameter	Value
Core statute	19 U.S.C. §§ 2411–2420 (Trade Act of 1974, as amended)
Administering agency	Office of the U.S. Trade Representative (USTR)
China tariff Lists	Lists 1–4 (covering ~$370B in Chinese imports at various rates)
Current China tariff rates	List 1: 25%; List 2: 25%; List 3: 25% (raised from 10%); List 4A: 7.5%; EVs: 100%; Solar cells: 50%; Batteries: 25%; Semiconductors: 50%
Special 301	Annual USTR "Priority Watch List" and "Watch List" for countries with inadequate IP protection
Product exclusions	USTR has issued thousands of product-specific exclusions (by HTS subheading) from Section 301 tariffs; most have expired
WTO status	China has repeatedly challenged Section 301 tariffs at WTO; WTO panels have generally found violations of WTO rules, but U.S. has blocked enforcement

Legal Authority

19 U.S.C. § 2411(a) — Mandatory action: USTR must take action (unless it determines action is not in the national economic interest) when a foreign country's practices deny rights under a trade agreement or are unjustifiable and burden U.S. commerce; China's IP practices were found to violate both prongs
19 U.S.C. § 2411(b) — Discretionary action: USTR may take action against unreasonable or discriminatory foreign practices that burden or restrict U.S. commerce, even without a trade agreement violation; "unreasonable" includes denial of fair and equitable market opportunities, export targeting, persistent trade surpluses, and IP denial
19 U.S.C. § 2412 — Initiation of investigations: USTR may self-initiate an investigation or respond to a petition filed by any interested party; USTR must consult with advisory committees and publish Federal Register notices of initiation; the China investigation was self-initiated in August 2017
19 U.S.C. § 2414 — Determination and action: USTR must make a determination within 12 months of investigation initiation (18 months if negotiations are ongoing); determination must identify the specific practice and propose a remedy proportionate to the burden on U.S. commerce
19 U.S.C. § 2415 — Implementation of actions: available actions include tariffs (ad valorem or specific), fees, restrictions on services trade, and suspension of trade agreement concessions; tariff actions must be published in the Federal Register with a 30-day comment period before implementation (though this has been shortened by presidential proclamation)
19 U.S.C. § 2416 — Monitoring and action termination: USTR monitors compliance with trade agreements after taking action; if the foreign country removes the offending practice, USTR may terminate the action; if the country retaliates, USTR may escalate
19 U.S.C. § 2242 (Special 301) — IP protection review: USTR must annually identify countries that deny adequate and effective intellectual property protection; Priority Watch List and Watch List countries trigger bilateral consultations and potential Section 301 investigations

How It Works

USTR's Section 301 investigation of China's technology transfer practices — initiated August 18, 2017 and concluded March 22, 2018 — found that China compels U.S. companies to transfer technology as a condition of market access, systematically acquires U.S. technology through state-directed investment and outright theft, and imposes restrictions denying adequate IP protection. The 215-page USTR report documented joint venture requirements, administrative licensing conditioned on technology transfer, discriminatory licensing restrictions, and state-sponsored cyber espionage. USTR implemented four rounds of tariffs in response: List 1 (July 2018, $34B at 25% — industrial and technology products), List 2 (August 2018, $16B at 25% — intermediate industrial goods), List 3 (September 2018, $200B initially at 10%, raised to 25% in May 2019 — broader consumer and industrial categories), and List 4A (September 2019, $120B at 7.5% — consumer goods including electronics and clothing).

USTR completed a statutory four-year review of the China tariffs in May 2024, raising rates on strategic categories: electric vehicles (25% to 100%), batteries (7.5% to 25%), solar cells (25% to 50%), ship-to-shore cranes (25% to 100%), semiconductors (25% to 50%), syringes and needles (0% to 50%), and certain steel and aluminum products (0–7.5% to 25%). These increases reflected the strategic competition framing underlying the tariffs — protecting domestic manufacturing in critical supply chains, not just punishing unfair trade. USTR also created a product exclusion process allowing importers to request relief when no domestic alternative exists, but tens of thousands of granted exclusions have since expired and USTR has been reluctant to reopen a broad exclusion process. Separate from the China tariffs, USTR publishes an annual Special 301 report identifying countries with inadequate IP protection — countries on the Priority Watch List (typically China, India, Russia, Saudi Arabia, Indonesia) face bilateral pressure and potential Section 301 investigations, with the report published in late April/early May each year.

How It Affects You

If you import Chinese goods and are currently paying Section 301 tariffs: The tariffs apply based on HTS code and country of origin. Every importer paying Section 301 duties should have conducted a full tariff classification audit — the correct HTS code determines which list (and which rate) applies, and small differences in classification can mean large duty differences. Check whether any expired product exclusions apply to your specific subheading at ustr.gov/trade-agreements/trade-agreements/section-301-investigations; some exclusions are periodically reinstated. For goods facing List 3 or List 4A rates (many consumer and industrial products), evaluate whether an engineering or sourcing change could shift origin to Vietnam, India, or Mexico — but get a prior ruling from CBP on whether the proposed manufacturing steps constitute a substantial transformation before committing supply chain capital. The risk of CBP finding that "country of origin = China" despite assembly elsewhere is real and carries substantial penalty exposure.

If you're a technology company or manufacturer whose IP has been stolen or licensed under coercion in China: Section 301 is the policy lever your industry has used, but the China tariffs don't directly compensate individual companies for past IP theft. The USTR investigation documented the systemic practices; your individual IP claim against Chinese entities still requires separate legal action (USITC Section 337, federal court, or arbitration) or diplomatic pressure through USTR's bilateral consultation process. If you can document specific Chinese government-mandated technology transfer requirements or theft patterns in your industry, filing a Section 301 petition or supporting an existing investigation with evidentiary submissions is the pathway to policy action.

If you are a U.S. manufacturer that uses China-origin inputs but also sells into China: Section 301 tariffs on your inputs raise your costs; Chinese retaliatory tariffs (China imposed tariffs on U.S. agricultural products, aircraft, and other goods in response) may impede your export sales. The net effect depends on your industry's input/output trade profile. Manufacturers with integrated China-U.S. supply chains have been squeezed from both sides — pay more for Chinese components, sell less into China. The only full hedge is diversifying both sourcing and export markets, which is the explicit supply chain diversification goal the tariff policy is designed to incentivize.

If you are a consumer: Section 301 tariffs are an import tax collected at the border and largely passed through to consumers in higher prices. Academic studies estimate the tariffs cost American households hundreds to over a thousand dollars annually in higher prices. The economic debate continues over whether domestic production gains (retained manufacturing jobs, increased U.S. semiconductor/battery investment) justify the consumer cost. No relief mechanism exists for individual consumers — unlike with AD/CVD duties, there is no refund or exclusion process at the consumer level.

State Variations

Section 301 tariffs are exclusively federal. No state variations. However, states with export-dependent agricultural sectors (soybeans — Iowa, Illinois; pork — Iowa; sorghum — Texas) have been disproportionately harmed by Chinese retaliatory tariffs responding to U.S. Section 301 actions.

Implementing Regulations

The petition and investigation procedures for Section 301 actions are governed by 15 CFR Part 2006 — Procedures for Considering Requests Under Section 301. Part 2006 implements 19 U.S.C. § 2419 (Section 309 of the Trade Act), which requires USTR to establish transparent procedures for private petitions seeking Section 301 action:

§ 2006.0 — Submission of petitions: any interested person may petition the USTR to take action under Section 301; petitions must be submitted in writing to USTR's Trade Policy Staff Committee (TPSC); USTR may also self-initiate investigations without a petition (as it did for the China technology transfer investigation in August 2017)
§ 2006.1 — Required petition content: petitions must clearly identify the foreign country's trade practice being challenged, the specific provision of the Trade Act under which action is requested (mandatory or discretionary action under § 2411), the industry or sector affected, and specific evidence that the practice burdens or restricts U.S. commerce — including trade flow data, market access barriers, and economic impact estimates; petitions requesting action under the IP-related provisions must describe the specific IP protection failures with supporting documentation
§ 2006.2 — Public filing: USTR publishes notice of each petition acceptance in the Federal Register and makes the petition available for public inspection (except confidential business information); this transparency requirement was designed to allow competing industry interests and foreign governments to respond to petitions before USTR makes a determination — a mechanism the 2018 China tariff proceedings bypassed somewhat by treating the investigation as a national security matter with compressed timelines
§ 2006.3 — Public hearing: for petitions requesting action against a foreign country, USTR holds a public hearing at which the petitioner, affected U.S. industries, importers, consumers, and other interested persons may testify; the Section 301 List 3 China tariff hearings (August 2018) produced extraordinary public participation — nearly 360 companies and industry groups testified over six days, many arguing that the proposed tariffs would harm U.S. businesses and consumers
§ 2006.8 — Requests for consultation: before making a determination, USTR must seek consultations with the foreign government whose practices are being investigated; for trade agreement violations, consultation is a treaty obligation; for discretionary action, consultations serve to explore whether the foreign government will voluntarily eliminate the practice before U.S. retaliatory measures are imposed
§ 2006.11 — Pre-determination consultations: prior to making a final determination on action, USTR must consult with the Section 301 Committee — an interagency committee chaired by USTR and including Commerce, Treasury, State, Agriculture, Labor, and other affected agencies; the Committee's advice informs but does not bind the USTR
§ 2006.12 — Determinations and time limits: USTR must make a determination within 12 months of initiation (18 months if negotiations are ongoing); determinations must identify the specific foreign practice and the proposed remedy (tariffs, import restrictions, service trade restrictions, or suspension of trade agreement benefits); for cases involving imminent trade agreement rights violations, USTR may act within 60 days
§§ 2006.13–2006.15 — Public inspection and confidentiality: the administrative record (all non-confidential submissions, hearing transcripts, USTR analyses) is available for public inspection; business confidential information submitted with a properly filed confidentiality request is exempt from public disclosure

USTR publishes Section 301 tariff lists and modifications through Federal Register notices — each tariff list (List 1: 83 Fed. Reg. 28710; List 2: 83 Fed. Reg. 40823; List 3: 83 Fed. Reg. 47974; List 4A: 84 Fed. Reg. 43304) was implemented by Federal Register notice with specific Harmonized Tariff Schedule subheadings and effective dates. CBP collects the additional Section 301 duties through its Automated Commercial Environment (ACE) system using specific duty codes (7440 series for China Section 301 tariffs). Product exclusion requests, when USTR has opened an exclusion process, are submitted through USTR's online exclusion portal and are also published in the Federal Register; approved exclusions identify the specific HTS subheading and often include a product description specifying the excluded merchandise.

Pending Legislation

HR 3306 (Truth in Tariffs Act) — Would require sellers to display Section 301 tariff surcharges separately from product prices, FTC-enforced. Status: Introduced.
HJRES 150 — Would terminate the national emergency underlying global tariffs (EO 14257); does not directly target Section 301.
Various Section 301 exclusion reinstatement requests — Multiple industry groups have petitioned USTR to reopen the exclusion process for specific product categories; no comprehensive exclusion round has been announced as of April 2026.

Recent Developments

The Trump administration's April 2025 "Liberation Day" tariffs imposed broad IEEPA-based tariffs on top of existing Section 301 tariffs — for Chinese goods, this had meant cumulative duty exposure (Section 301 + IEEPA + applicable AD/CVD) that could exceed product value
February 20, 2026 — Learning Resources, Inc. v. Trump, 607 U.S. ___ (6-3, Roberts, C.J.): the Supreme Court struck down the IEEPA-based reciprocal tariffs under the major questions doctrine, holding that IEEPA does not authorize tariffs. Section 301 tariffs were not addressed by the decision and remain fully in force — the Court distinguished IEEPA from statutes like Section 301 (Trade Act of 1974) and Section 232 (Trade Expansion Act of 1962) that were enacted with the express purpose of authorizing the President to adjust import duties through structured investigative processes. Section 301 has thus become the primary vehicle for the administration's continuing trade actions against China, layered with Section 232 sectoral duties on steel, aluminum, copper, semiconductors, and critical minerals
USTR's May 2024 four-year review raised rates on electric vehicles (to 100%), solar cells (to 50%), and semiconductors (to 50%), explicitly prioritizing strategic industrial policy over trade deficit reduction
China's Permanent Normal Trade Relations (PNTR) status is under active Congressional review — the ITC self-initiated a study in March 2026 on economic effects of revocation, which would replace MFN rates with Smoot-Hawley Column 2 rates far exceeding current Section 301 levels
The Biden administration's Phase 1 deal with China (January 2020) required $200B in Chinese purchases of U.S. goods — China did not meet the purchase targets, reinforcing USTR's position that Section 301 tariffs should remain in place as leverage
Section 301 tariffs have become bipartisan: despite the tariffs originating in the first Trump term, the Biden administration maintained them entirely and expanded them in 2024; the second Trump administration has further escalated them