The Liberal Party, which not long ago seemed destined to crash in federal elections under Justin Trudeau, is experiencing a reversal of fortune. Here’s what a close review of polls shows.

© Cole Burston for The New York Times

Donald Trump wants to make Canada the 51st state. Canadians have a lot to say about that.

Corporate chiefs see “chaos,” and investors see red as the effect of President Trump’s shifting trade policy begins to weigh on board rooms and trading rooms.

President Trump has offered a mix of reasons for upending global trade relations, baffling and angering America’s biggest trading partners.

Prime Minister Justin Trudeau of Canada warned that the Trump administration’s tariffs were leading to a trade war. Mexico’s leader vowed to impose countermeasures on Sunday.