What Are Trump’s Plan B Options After Emergency Tariffs Are Struck Down? Decoded

This article explains the US Supreme Court ruling limiting broad emergency tariffs, and outlines alternative tools under Section 232, Section 301, Section 122 and Section 338 that may still be used, shaping future US trade policy and import duties.

The US Supreme Court has blocked President Donald Trump from using emergency powers to levy wide tariffs on imports, but the ruling has not shut down Trump tariffs altogether. The decision, passed 6-3 by the full nine-judge bench, rejected Trump's claim of sweeping authority, yet still leaves several legal routes for targeted duties on foreign goods.

Tariffs have shaped Trump's economic and foreign policy during the second term, with double-digit "reciprocal" duties applied on most trading partners. Trump argued that long-running US trade deficits amounted to a national emergency. The court disagreed, stating the President acted alone, even though the US Constitution gives Congress the main authority over taxation and tariffs.

Trump tariffs and the Supreme Court setback

The administration tried to rely on the International Emergency Economic Powers Act, or IEEPA, to justify these broad tariffs. With that path now blocked, Trump tariffs must instead rest on long-standing trade laws used in earlier years. Officials and experts note that the White House still retains several tools, though each carries limits, procedures, or political costs.

Among the most familiar powers behind Trump tariffs is Section 232 of the Trade Expansion Act of 1962, which allows tariffs on imports deemed a national security risk. Trump used Section 232 in 2018 to hit foreign steel and aluminium and has widened that list since returning to office, adding autos, auto parts, copper, lumber, kitchen cabinets, bathroom vanities and upholstered furniture.

National security Trump tariffs and investigation rules

Section 232 tariffs are not capped by law, but they do require a formal investigation by the US Commerce Department. The inquiry is controlled by the administration, giving the White House strong influence over the findings, similar to Section 301 cases. Still, the legal requirement for a process could slow any rapid escalation of Trump tariffs under this tool.

Another key legal basis for Trump tariffs is Section 301 of the Trade Act of 1974, created to counter "unjustifiable," "unreasonable" or "discriminatory" trade practices. Trump used Section 301 aggressively in the first term against China, applying broad tariffs on Chinese goods in response to Beijing's tactics to challenge US technological strength, and the United States is now using it again over Chinese shipbuilding.

Retaliatory Trump tariffs under trade law

Section 301 has no formal ceiling on tariff rates, and duties can last four years and be renewed. However, the US Trade Representative must first investigate and usually hold a public hearing before penalties start. Specialists say this framework works best against major economies like China, yet it is less convenient when Trump targets smaller countries with so-called reciprocal Trump tariffs.

Congress also wrote a narrower option into Section 122 of the 1974 Trade Act, aimed specifically at trade imbalances. It allows the President to impose tariffs of up to 15 per cent for as long as 150 days to counter a deficit. No investigation is needed beforehand, but Section 122 has never actually been used for tariffs, leaving its real-world operation uncertain.

A much older statute could also underpin Trump tariffs. The Tariff Act of 1930, commonly called Smoot-Hawley, imposed heavy import duties during the Great Depression and is widely blamed by economists and historians for curbing trade and deepening the downturn. The law even appears in pop culture through a classroom scene in the 1986 film "Ferris Bueller's Day Off."

Depression-era Trump tariffs and Section 338

Section 338 of the 1930 law lets a president charge tariffs of up to 50 per cent on goods from countries that discriminate against US businesses. It requires no investigation and has no time limit. Although these sanctions have never been applied, American negotiators brandished them as leverage during 1930s trade talks, and US Treasury Secretary Scott Bessent told Reuters in September last year that the administration was considering Section 338 as a Plan B if the Supreme Court ruled against Trump's use of emergency powers tariffs.

With the IEEPA route closed, Trump tariffs now depend on this mix of security, retaliation, deficit and Depression-era authorities. Each path allows significant discretion but also involves procedures, political scrutiny or untested provisions. How frequently the White House turns to these remaining tools will shape future trade relations and the scale of import duties imposed by the United States.