Republican U.S. senators join push to block Trump’s Canadian tariffs

A growing bipartisan cohort of U.S. senators is poised to challenge the White House’s justification for imposing tariffs on Canadian goods, in what could be the most significant Republican rebuke to U.S. President Donald Trump of his administration’s second term.Senators are expected to cast their votes Tuesday on a resolution in the Republican-controlled chamber seeking to terminate the national emergency the White House declared over illicit fentanyl flowing from Canada into American territory. Mr. Trump declared the emergency at the northern border in order to unlock special executive powers that allowed him to bypass congressional approval of the tariffs.