WASHINGTON, D.C. — Donald Trump's tariff threats have rattled foreign businesses and governments, with many fearing it could signal the opening salvo of an all-out trade war when he returns to the White House next year.
The president-elect on Monday placed both allies and rivals on notice, vowing to quickly slap an across-the-board tariff of 25 percent on Canada and Mexico, and add a 10-percent tariff on China.
