The Trump administration is threatening a 25% tariff on all imports from Canada and Mexico as soon as Saturday — a move that would almost immediately impact car dealerships and factories in the United States.

The US’s economic partners are racing to sustain trade volumes in a Donald Trump era by closing new bilateral deals and rerouting supply chains to cope with increased US protectionism. Policymakers and trade experts say countries are turning to a tactic deployed during the US president’s first term in office,