Since U.S. President Donald Trump first threatened to place massive tariffs on Canadian goods, the country has been embroiled in a whirlwind back and forth with its biggest trading partner. Here's a quick look at how tariffs are set under normal circumstances.

Mark Carney, Canada’s new prime minister, was greeted warmly in Europe on Monday during his first foreign visit as leader, in a stark contrast to the hostility channeled toward Canada by US President Donald Trump.

One lawmaker says cruise stops in Canadian ports could get cut as tariff tensions continue to rise between the U.S. and Canada.