What to know as President Donald Trump imposes steep new tariffs on imports from Canada, Mexico and China, prompting retaliation and countermeasures.

Canada's prime minister and Mexico's president ordered retaliatory tariffs on goods from the U.S, following through with their threats after U.S. Donald Trump sparked a trade war by imposing sweeping tariffs on imports from Canada,

This will be the golden age of America! Will there be some pain? Yes, maybe (and maybe not!). But we will make America great again, and it will all be worth the price that must be