Canada found itself in a precarious position on Monday morning after Mexico cut a deal with President Trump to postpone tariffs in exchange for a major deployment of forces along the border between the two countries.

President Donald Trump's new tariff orders against Canada, Mexico and China all contain clauses suspending a duty-free exemption for low-value shipments below $800 that is widely seen as a loophole that has allowed shipments of fentanyl and its precursor chemicals into the United States.