Trump had threatened to impose tariffs in February before suspending them at the last minute, when Mexico sent 10,000 National Guard troops to their shared border to crack down on drug trafficking and illegal immigration.

A majority of the U.S. Senate on Wednesday voted to confirm Jamieson Greer as U.S. Trade Representative, putting the veteran of President Donald Trump's first-term trade wars fully on the job just days ahead of a March 4 deadline for punishing 25% tariffs on imports from Canada and Mexico.

Commerce Secretary Howard Lutnick said Trump will decide Tuesday afternoon whether to proceed with, reduce or postpone tariff plans that have been on hold.