Canadian Prime Minister Justin Trudeau was caught on a hot mic on Friday saying that President Trump's talk of making Canada the 51st U.S. state is "a real thing," local media reported. Canadian public broadcaster CBC reported that Trudeau made those comments to business leaders and labor leaders in a closed-door session that was mistakenly carried by a loudspeaker. Trudeau suggested Mr. Trump has floated the idea of annexing Canada because he wants access to the country's critical minerals. "Mr. Trump has it in mind that the easiest way to do it is absorbing our country and it is a...