By David Lawder and David Shepardson (Reuters) -Canada and Mexico won protections against potential new U.S. auto tariffs in 2018 as part of the U.S.-Mexico-Canada Agreement on trade, but there is no evidence that President Donald Trump will honor those commitments as he imposes 25% duties on global automotive imports.

Recent reports predict that car insurance premiums will surge if President Trump carries out his threat to tax metals imported from Canada and Mexico next month.

Canadian Prime Minister Mark Carney told President Donald Trump Wednesday that his nation will retaliate against the United States with tariffs of its own if Trump presses forward with his promised levies – potentially escalating what is already developing into an ugly and damaging trade war.