Supreme Court Justices Question Trump Administration’s Legal Basis for Broad Tariff Powers

 

WASHINGTON — U.S. Supreme Court justices from across the ideological spectrum pressed tough questions on Wednesday as they considered whether former President Donald Trump overstepped presidential authority by imposing wide-ranging tariffs under a 1977 national emergency law.

The case centers on Trump’s use of the International Emergency Economic Powers Act (IEEPA) to levy tariffs on goods from numerous foreign trading partners — a move critics say bypassed Congress’ constitutional authority over taxes and trade policy.

Solicitor General D. John Sauer, arguing for the Trump administration, maintained that the former president acted within his powers, saying Trump determined U.S. trade deficits posed a national security risk. Sauer argued the tariffs helped Trump negotiate trade deals and warned that undoing them could trigger retaliation and economic instability.

But Chief Justice John Roberts, along with conservative and liberal colleagues, questioned whether IEEPA was ever intended to give the president open-ended tariff authority.

“The imposition of taxes on Americans has always been the core power of Congress,” Roberts said, suggesting the administration’s interpretation could upset the constitutional balance of power.

Justice Amy Coney Barrett asked whether the phrase “regulate importation” in the law had ever historically been used to justify imposing tariffs.
Justice Elena Kagan noted that Congress originally passed IEEPA to restrict, not expand, executive power during emergencies.
Justice Neil Gorsuch expressed concern that the administration’s interpretation could allow the executive branch to permanently absorb congressional power, calling it a “one-way ratchet.”

Meanwhile, Justice Brett Kavanaugh pointed to a 1970s precedent where President Richard Nixon imposed worldwide tariffs under similar authority, suggesting some possible support for Trump’s position.

Major Questions Doctrine at the Center

 

The Court also weighed whether the “major questions doctrine” applies — a rule requiring clear congressional authorization when the executive branch takes action with significant economic and political impact.

Lower courts previously struck down the tariffs on this basis, saying Congress never expressly approved such a sweeping economic measure.

Broader Stakes

The tariffs have generated roughly $89 billion in revenue so far and could total trillions over the next decade. The outcome of the case could reshape presidential authority over both trade and national emergency declarations going forward.

Trump has indicated that if the Court rules against IEEPA, his administration may rely on alternate trade laws to maintain the tariffs.

The Court is expected to rule in the coming months, though the administration has requested an expedited decision.