Title 19 › CHAPTER 27 — BIPARTISAN CONGRESSIONAL TRADE PRIORITIES AND ACCOUNTABILITY › § 4202
The President can make trade deals and change import duties or other trade limits when those rules are hurting U.S. trade or when such deals would support the goals of the trade law. The President may negotiate and, before either July 1, 2018 or (if Congress agrees to extend special rules) July 1, 2021, enter agreements and proclaim changes needed to carry them out. The President must tell Congress before starting an agreement. There are limits: duties cannot be cut below half of what they were on June 29, 2015 (except for duties that were 5% or less on that date), cannot be cut below the Uruguay Round level for sensitive farm products, and cannot be raised above the June 29, 2015 level. Duty reductions are usually phased in each year by either 3% ad valorem or one-tenth of the total cut, whichever is larger, unless the product is not made in the United States. The President can round annual cuts by up to 0.5% to simplify math. Any reductions barred by those limits can only take effect if Congress passes an implementing law. The President may also make agreements to remove or limit non-tariff trade barriers when they hurt U.S. trade or the economy. Such agreements must meet the law’s objectives and other required conditions. If changes in U.S. law are needed, Congress considers an implementing bill under the special “trade authorities” process. To extend those fast-track procedures to agreements made after June 30, 2018 and before July 1, 2021, the President had to ask Congress by April 1, 2018, and Congress could block the extension by passing a specific disapproval resolution before July 1, 2018. The President must also start talks, when useful and timely, on tariffs and non-tariff barriers in many sectors, including agriculture, services, intellectual property, industrial goods, government buying, information technology, environmental and medical technology, civil aircraft, and infrastructure.
Full Legal Text
Customs Duties, Source: USLM XML via OLRC
Legislative History
Reference
Citation
19 U.S.C. § 4202
Title 19, Customs Duties
Last Updated
Sep 22, 2026
Release point: 119-110