Sens. Chuck Grassley and Maria Cantwell authored the Trade Review Act of 2025, which would force Trump to notify Congress before enacting a new tariff.

U.S. Senator Chuck Grassley (R-Iowa) and U.S. Senator Maria Cantwell (D-Washington) are introducing a bill aiming to rein in President Trump's ability to impose tariffs.The measure would give Congress the final say on any tariffs and also requires the president to justify new tariffs with an analysis of their potential impact.

Sen. Chuck Grassley (R., Iowa) joined with Sen. Maria Cantwell (D., Wash.) to introduce a bipartisan bill on Thursday that would rein in the president’s power to impose tariffs, allowing Congress to remove tariffs put in place by the administration.

Sen. Mitch McConnell, R-Ky., denounced tariffs as “bad policy” and “a tax on everyday working Americans,” becoming the latest Republican to break with President Donald Trump’s trade policies a day after he introduced a sweeping tariff package that sent stocks nosediving and threatened to drive up prices for a long list of consumer goods.

Republicans in Congress are watching with unease as stock markets tumble in the aftermath of President Donald Trump’s sweeping tariffs.