The changes that Democrats demanded on provisions regarding the environment, pharmaceuticals, labor and overall enforcement were the subject of intense negotiations between U.S. Trade Representative Robert Lighthizer and House Democrats. 

Sources tell the Associated Press that a new U.S.-Mexico-Canada trade deal has been reached among U.S. politicians. Details on the deal still need to be finalized and the U.S. Trade Representative will need to submit the implementing legislation to Congress. No vote has been scheduled.

The United States, Mexico and Canada are discussing the fine print of the agreement that requires 70 per cent of steel and aluminum in vehicles to come from the continent in order to receive duty-free treatment.

U.S. President Donald Trump and Prime Minister Justin Trudeau met in London on Tuesday afternoon, on the sidelines of a summit of NATO leaders. Prior to the meeting, Trump said he wouldn't blame Trudeau or Mexico's President Andres Manuel Lopez Obrador for walking away while the deal waits for a vote in the U.S. Congress.