The Reciprocal Trade Agreements Act of 1934 was a federal law that transferred much of the authority to set U.S. tariff rates from Congress to the President, allowing the executive branch to negotiate bilateral trade agreements and cut duties by proclamation without a separate vote on each deal. Signed in June 1934, it was Congress’s response to the collapse in global commerce that followed the Smoot-Hawley Tariff Act of 1930. Within six years, the United States had signed agreements with 21 countries covering roughly 60 percent of American trade, and the average tariff on dutiable imports had fallen sharply from its Smoot-Hawley peak.1United States International Trade Commission. US Trade Policy Since 1934
Why Congress Passed the Law
Smoot-Hawley had raised the average tariff on dutiable imports to 59.1 percent.2National Bureau of Economic Research. The Smoot-Hawley Tariff – A Quantitative Assessment Trading partners retaliated. Between 1929 and 1933, the value of world trade fell by 66 percent, and within two years of Smoot-Hawley’s enactment, the volume of U.S. exports and imports had each dropped by roughly 41 percent.1United States International Trade Commission. US Trade Policy Since 1934
The political diagnosis was that the traditional process of Congress setting rates product by product had become a vehicle for logrolling. Lawmakers traded votes to protect local industries and ratcheted duties higher regardless of the broader cost. Every tariff bill turned into a Christmas tree of favors for home-district manufacturers and farmers. Secretary of State Cordell Hull, a longtime advocate of lower tariffs, made reversing that dynamic the centerpiece of the Roosevelt administration’s trade agenda.
What the Law Authorized
The Constitution gives Congress the power to “lay and collect Taxes, Duties, Imposts and Excises,”3Constitution Annotated. Article I Section 8 and for nearly 150 years Congress had exercised that power directly. The RTAA changed the arrangement by authorizing the President to negotiate bilateral trade agreements with foreign governments and to adjust tariff rates by proclamation to carry those agreements out.4Office of the Law Revision Counsel. 19 USC 1351 – Foreign Trade Agreements
The delegation was not unlimited. The statute capped any adjustment, prohibiting a rate increase of more than 50 percent above the rate existing on July 1, 1934, or a decrease of more than 50 percent below the rate existing on January 1, 1945. The President also could not move any product between the dutiable and free lists entirely.4Office of the Law Revision Counsel. 19 USC 1351 – Foreign Trade Agreements These guardrails gave negotiators substantial room to maneuver while preserving some protection for every domestic industry.
Congress also built procedural checks into the front end of every negotiation. Before concluding an agreement, the government had to publish reasonable public notice of its intention to negotiate and give interested parties an opportunity to present views. The President was required to seek information and advice from the Departments of State, Agriculture, Commerce, and Defense, and to request an investigation and report from what is now the International Trade Commission, which had to hold its own public hearings.5Office of the Law Revision Counsel. 19 USC 1354 – Notice of Intention to Negotiate Agreement
The most important constraint was temporal. The RTAA granted authority for only three years at a time, forcing the President to return to Congress for renewal. The initial authority ran from 1934 to 1937, was renewed in 1937 and 1940 for three-year terms, and was renewed again in 1943 for two years. Each renewal was a real legislative fight where opponents tried to attach restrictive amendments or let the authority lapse.
How the Reciprocal Deals Worked
The core mechanism was simple. If a foreign government agreed to lower its barriers to American goods, the President could offer a matching reduction in U.S. import duties on that country’s products. Each agreement was a detailed, commodity-specific document. The two governments identified products where mutual concessions made sense, set new duty rates for each, and bound those rates for the agreement’s duration.
The first deal, with Cuba in 1934, was followed by agreements with Belgium, Haiti, Sweden, Brazil, Colombia, Canada, and more than a dozen other countries. By June 1940, 21 agreements were in force. The average ad valorem tariff on dutiable imports fell from its Smoot-Hawley peak above 50 percent to 25.3 percent by 1946, and to roughly 11 percent by 1960.1United States International Trade Commission. US Trade Policy Since 1934 Later legislation and the GATT rounds carried the reduction forward, but the RTAA reversed the direction of American trade policy.
The Most Favored Nation Multiplier
The RTAA’s real reach came from the Most Favored Nation clause. Under this principle, any tariff reduction the United States granted to one country automatically extended to every other country holding an MFN relationship with the United States. A deal with Brazil that lowered the duty on coffee applied to coffee from Colombia, Guatemala, and every other MFN partner. A single bilateral negotiation could reshape tariff rates across dozens of trading relationships at once.
The logic was administrative as much as diplomatic. Without MFN, the government would have needed separate tariff schedules for every trading partner, and countries receiving less favorable treatment would have had constant grievances. MFN eliminated that friction and pushed global tariff levels downward faster than isolated bilateral deals could. The principle proved effective enough that it became the backbone of the General Agreement on Tariffs and Trade in 1947, where Article I required any tariff concession granted to one member to be extended “immediately and unconditionally” to all other members.6World Trade Organization. General Agreement on Tariffs and Trade
MFN was never absolute. GATT Article XXIV allows countries to form free-trade areas and customs unions that eliminate tariffs among members without extending those deeper preferences to other WTO members, provided the arrangements cover “substantially all the trade” between the participating countries and do not raise barriers to outsiders above pre-existing levels.7World Trade Organization. Regional Trade Agreements – GATT Article XXIV That exception is what allows arrangements like USMCA and the EU single market to coexist with the MFN system.
Protective Mechanisms Added Over Time
As the RTAA was renewed through the 1940s, critics argued that some domestic industries were being harmed by the tariff reductions. Congress responded by grafting protective mechanisms onto the program rather than killing it.
The escape clause allowed a domestic industry to seek temporary relief if imports increased so sharply that they caused or threatened “serious injury.” The concept traces to Article XIX of the GATT, which permitted countries to escape temporarily from their tariff commitments for specific products under emergency conditions.8United States International Trade Commission. Understanding Section 201 Safeguard Investigations In its modern American form under Section 201 of the Trade Act of 1974, an industry can petition the International Trade Commission for an investigation, and the Commission must determine whether the increased imports are a “substantial cause” of the serious injury.
The peril point provision, first added in 1948, worked at the front end of negotiations. Before the President could enter negotiations on any product, the Tariff Commission was required to identify the point below which a tariff reduction would cause or threaten serious injury to the domestic industry producing that product. If the President agreed to a rate below the peril point, he had to report that fact to Congress with an explanation. The provision did not technically bar going below the peril point, but it created political accountability by making any such decision transparent.
From the RTAA to the GATT and Beyond
The bilateral approach had a limit. Negotiating country by country was slow, and each deal required its own commodity-specific concessions. After World War II, the United States leveraged the RTAA framework into something more ambitious. In October 1947, 23 countries signed the General Agreement on Tariffs and Trade in Geneva, creating a multilateral system that applied the RTAA’s core principles on a global scale.9United Nations. General Agreement on Tariffs and Trade The GATT’s preamble committed its signatories to “reciprocal and mutually advantageous arrangements directed to the substantial reduction of tariffs and other barriers to trade and to the elimination of discriminatory treatment in international commerce.”6World Trade Organization. General Agreement on Tariffs and Trade
The RTAA itself was eventually superseded. The Trade Expansion Act of 1962 replaced its framework with broader tariff-cutting authority designed to enable the Kennedy Round of GATT negotiations. The Trade Act of 1974 then introduced what became known as fast track authority, later renamed Trade Promotion Authority, which refined the original RTAA bargain between Congress and the President. Under TPA, the President could negotiate agreements within objectives set by Congress, and the resulting implementing legislation received expedited congressional consideration with no amendments, no filibusters, and a guaranteed up-or-down vote within a set timeframe. The mechanism was most recently established under the Bipartisan Trade Promotion Authority Act of 2002 and renewed in 2015.10Office of the Law Revision Counsel. 19 USC 3803 – Trade Agreements Authority
The RTAA’s legacy is less about any single tariff reduction than about the institutional shift it produced. Before 1934, American trade policy was made by 535 members of Congress haggling over commodity schedules. After 1934, it was made through executive negotiation, subject to congressional guardrails, informed by expert agency review, and constrained by international commitments. Every major piece of trade legislation since, from the Trade Expansion Act to NAFTA to the creation of the WTO in 1995, operates within the basic framework that Cordell Hull and the 73rd Congress built in the depths of the Great Depression.