Summary: Why aren't the Democrats ready to impeach President Trump? The columnists ask Massachusetts Senator Ed Markey in this live episode recorded at WBUR CitySpace in Boston on May 29. They also talk about Robert Mueller’s first public remarks and the Democrats’ evolving approach to climate politics. Then, as right-wing populists and nationalist parties gain ground in countries around the world, is global liberalism on the decline? For background reading on this episode, visit nytimes.com/theargument
