Supreme Court Decision Brings Little Respite for Republicans Split Over Trump’s Tariffs

For a brief period on Friday, congressional Republicans appeared to gain some relief from one of their most persistent sources of tension with Donald Trump: tariffs. The respite proved short-lived.

The Supreme Court invalidated a significant portion of Trump’s global tariff framework, ruling that the constitutional authority to impose such taxes rests with Congress. Republican lawmakers initially responded cautiously, with some welcoming the decision and party leaders signalling a willingness to collaborate with Trump on trade policy.

By later that day, however, Trump dismissed any suggestion of working with Congress, announcing he would move ahead independently with a new global 10 percent import tax. On Saturday, he escalated the proposal, saying the tariff would rise to 15 percent.

Trump invoked the Trade Act of 1974 to justify the move — a law that allows temporary tariffs under specific economic conditions but has never been used in this manner. The decision carries potentially wide-ranging consequences for global markets and ensures tariffs will remain a politically sensitive issue for Republicans, particularly as midterm elections approach.

“I have the right to do tariffs, and I’ve always had the right to do tariffs,” Trump said at a news conference, insisting he did not require congressional approval.

Tariffs have been one of the few issues where the Republican-controlled Congress has openly diverged from Trump. Both chambers have previously passed resolutions aimed at rebuking tariffs on key trading partners, including Canada.

The debate has exposed divisions within the party, particularly between traditional free-trade conservatives and a newer faction aligned with Trump’s “America First” protectionist stance. Senate Republican veteran Mitch McConnell criticised sweeping trade conflicts, warning they raise consumer costs and disrupt industries vital to states such as Kentucky.

Trump, meanwhile, signalled political consequences for dissenters. On Saturday, he announced he was withdrawing his endorsement of Colorado Representative Jeff Hurd after Hurd opposed tariffs on Canada, instead backing Hurd’s Republican primary challenger.

Democrats, seeking to regain control of Congress, quickly seized on the developments. Senate Democratic Leader Chuck Schumer argued that Trump’s revised tariffs would continue to increase consumer costs. Other Democrats called for refunds to consumers for tariffs struck down by the court, framing the issue as part of a broader argument that tariffs worsen inflationary pressures.

Economic analysts have also warned of strain on US businesses, many of which must either raise prices, reduce hiring, or accept lower profits to absorb import taxes.

While the Supreme Court underscored Congress’s primary authority over tariffs, it remains uncertain whether lawmakers will attempt to challenge Trump’s latest measures. Some Republicans praised the ruling and urged Congress to assert its powers, while others strongly backed Trump’s tariff strategy, reflecting an ongoing ideological shift within the party.

The renewed tariff push suggests trade policy will remain a central flashpoint in Washington’s political and economic debates.