Wall Street stocks slipped and the dollar gained, on Friday after President Donald Trump announced tariffs on Canada, Mexico and China, capping a volatile week for markets. The U.S. will impose 25% tariffs on Canada and Mexico,

President Donald Trump's threatened tariffs on China, Canada, Mexico and other countries could take effect tomorrow. Goods from China could be subjected to a 10 percent tariff, while those from Mexico and Canada could come under tariffs of 25 percent.