Canadian Prime Minister Justin Trudeau said Monday that Americans “are beginning to wake up to the real reality that tariffs on everything from Canada would make life a lot more expensive" and said he will retaliate if Donald Trump goes ahead with them.

The president-elect’s mockery of Canada and its leader is the latest salvo after his promise to impose steep tariffs on Canadian exports.

Why would Donald Trump call the Canadian prime minister "governor"? It all stems from his confusion about what a trade deficit is.