Joe Biden's resignation as the Democratic nominee for U.S. president, less than six months before the election, caused a stir in Canada and reignited discussions about Prime Minister Justin Trudeau's future, especially since Trudeau has been under scrutiny following his party's loss in a spring byelection and could face further challenges if the Liberals lose another byelection later this year; National Post political reporter Catherine Levesque joins the show to explore these issues and the potential threat to Trudeau's leadership. Learn more about your ad choices. Visit megaphone.fm/adchoices