China on Tuesday announced retaliatory tariffs and export controls, as President Donald Trump's tariffs on goods from China, Canada and Mexico went into effect

The trade war promised by President Donald Trump stepped up a gear overnight, with 25% tariffs on goods from Mexico, Canada, and an additional 10% on China taking effect. No one was really sure that it would actually happen—a month ago,

Growth expectations for the U.S. economy are falling as China and Canada announce their next move in the tit-for-tat trade spat with the White House.