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.

President Trump imposed hefty tariffs on the United States’ largest trading partners on Tuesday, roiling global relations and sending shock waves through industries that depend on trade.

President Donald Trump was poised to impose 25% taxes on imports from Canada and Mexico Tuesday and to double to 20% his levies on Chinese products. All three countries — America's top trading partners — are threatening retaliation.