GOP senators line up with Democrats to oppose Canada tariffs

By Lisa Kashinsky, Jordain Carney, Meredith Lee Hill | 04/01/2025 06:20 AM EDT

A loss on the Senate floor Tuesday would represent the most significant Republican rebuke of President Donald Trump’s second term.

Sen. Thom Tillis speaks with reporters in the Capitol.

Sen. Thom Tillis of North Carolina is among the Republicans ready to deal a blow to President Donald Trump's Canadian tariffs. Francis Chung/POLITICO

Republicans could be poised to deal a symbolic blow to President Donald Trump’s trade policy, with several GOP senators indicating they planned to join Democrats in a Tuesday vote to block blanket tariffs on Canada.

Sen. Susan Collins (R-Maine) said Monday that she plans to back the resolution led by Sen. Tim Kaine (D-Va.) that would terminate the national emergency Trump declared last month, citing fentanyl trafficking and illegal immigration.

Trump has used that declaration to justify 25 percent across-the-board tariffs on America’s northern neighbor and leading trade partner — duties that Trump has threatened to start levying later this week.

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“Imposing tariffs on Canada, which is our closest neighbor, [a] friendly ally, is a huge mistake and will cause disruption in the economies of both countries,” Collins told reporters while wearing a Canadian flag pin alongside a U.S. flag pin on her lapel.

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