Supreme Court Slaps Down Trump Tariffs But Congress Still Sleeps on Trade Reform

In a rare moment of judicial pushback against the Trump administration’s tariff tantrums, the U.S. Supreme Court struck down the so-called “Liberation Day” tariffs in February. The ruling slammed the brakes on President Trump’s expansive and legally dubious use of the International Emergency Economic Powers Act (IEEPA) to impose sweeping trade restrictions. Commentators hailed the decision as a crucial check on executive overreach and a rare win for constitutional limits on presidential power.

But don’t pop the champagne just yet. As Trevor Sutton explains in Foreign Affairs, this judicial rebuke exposes a far bigger problem: the long-term collapse of congressional leadership on trade policy. Over the last half-century, Congress has steadily handed over its constitutional authority on tariffs and trade agreements to the executive branch, largely stepping back from the hard work of crafting rules fit for the 21st-century global economy.

The result? Presidents have been left with broad, outdated powers originally designed for a different era—powers ripe for abuse and political gamesmanship. Trump’s aggressive tariff wars, which sparked retaliatory tariffs from allies and sent shockwaves through global markets, are just the latest manifestation of this structural failure.

Since the 1990s, Congress has barely legislated on trade, content to let the executive branch navigate the complex and often fraught world of international commerce. The last major update to tariff authority was in 1988, long before China’s rise and the fracturing of old trade alliances. Meanwhile, the World Trade Organization, once seen as a safeguard against unilateral tariff actions, has faltered, leaving the U.S. vulnerable to unpredictable trade conflicts.

Despite the Supreme Court’s ruling, Trump has already found other legal avenues to reimpose many of the tariffs that were struck down. This patchwork approach underscores the need for a comprehensive overhaul. Sutton argues that only Congress can fix this mess by reclaiming its constitutional role and crafting clear, objective laws that define when and how tariffs can be used—especially on national security grounds—rather than leaving such decisions to presidential whim.

Without congressional action, the executive branch will continue to wield de facto control over trade policy, undermining democratic accountability and risking further economic and diplomatic chaos. The Supreme Court’s decision is a warning shot, not a solution.

If we want trade policy that protects American workers, respects allies, and upholds the rule of law, Congress must stop hiding and start legislating. Otherwise, expect more tariff tantrums, more court battles, and more damage to the global economy.

We’ll be watching.