Here are five key things investors need to know to start the trading day.

Republicans failed to renew a ban on legislation seeking to overturn tariffs imposed by President Donald Trump, setting the stage for Democrats to potentially force votes later this week to terminate the penalties on Canada and Mexico.

U.S. Treasury Secretary Scott Bessent cited Canada's recent trade agreement with China that reduced tariffs on some Chinese EVs as a reason for not dropping tariffs on Canada.

Canadian Prime Minister Mark Carney said he had a clarifying call with U.S. President Donald Trump amid a spat over the construction of a bridge between Ontario and Detroit. Trump said in a post on Truth Social that he would not allow the Gordie Howe International Bridge to open because he believes Canada has treated the United States unfairly in their trading relationship.

In an escalation of his trade war, President Donald Trump moved to put tariffs on nations that levy taxes and fees that hurt U.S. businesses.