Summary

A libertarian legal group backed by Charles Koch and Leonard Leo has filed a lawsuit challenging Trump’s sweeping tariffs on Chinese imports, arguing he unlawfully invoked the International Emergency Economic Powers Act (IEEPA).

The group, New Civil Liberties Alliance, claims only Congress can impose tariffs and warns Trump’s actions violate the Supreme Court’s “major questions” doctrine.

The suit reflects growing GOP dissent, with Senators Rand Paul, Mitch McConnell, and others also pushing to rein in Trump’s trade powers amid economic fallout and plunging markets.