Trump's Trade War with Canada Threatens Republican Senate Efforts

President Donald Trump's escalating trade war with Canada is causing concern for Republican efforts to address economic concerns in key Senate states. The dispute began over the weekend after negotiations broke down, leading Trump to raise tariffs on $20 billion in Canadian imports.

CANADA PLANS TO ANNOUNCE ITS OWN TARIFFS ON TUESDAY, and the conflict could lead to higher prices and scrambled supply chains for Americans already frustrated with the president's management of the economy.

Republican Sen. Susan Collins of Maine, a target for Democrats this year, warned that fallout from Trump's approach would hurt U.S. businesses and consumers.