Canada and Mexico won protections against potential new US auto tariffs in 2018 as part of the US-Mexico-Canada Agreement on trade, but there is no evidence that President Donald Trump will honour those commitments as he imposes 25 per cent duties on global automotive imports. The side letters to the USMCA trade deal agreed to by Trump's first administration granted both Mexico and Canada a 60-day delay on the imposition of any global auto tariffs as a result of his first-term Section 232 national security investigation into auto imports.