Is Trump trolling Canada?

Ever since U.S. President Donald Trump started his ‘51st state’ rhetoric, Canadians have been parsing every word to discern what's real and what’s bluster.

Last week, the White House was back at it, threatening tariffs on Bombardier and aircraft made in Canada. And Prime Minister Mark Carney was warned by the U.S. Treasury Secretary not to ‘pick a fight’ ahead of CUSMA trade negotiations.

When it comes to the Trump administration’s trolling comments and tariff threats, how can Canadians know what to take seriously? CBC Washington correspondents Katie Simpson, Paul Hunter and Willy Lowry dig in.