President Donald Trump’s long-threatened tariffs against Canada and Mexico finally went into effect Tuesday, putting global markets on edge and setting up costly retaliations by the United States’ North American allies.

Follow along for live updates as markets and traders brace for impact after Donald Trump said his plan to tariff goods from Canada, Mexico and China will move forward.

U.S. President Donald Trump's new 25% tariffs on imports from Mexico and Canada took effect on Tuesday, along with a doubling of duties on Chinese goods to 20%, launching new trade conflicts with the top three U.