While President Trump demands an investigation into the investigators investigating the investigation, the clamour to impeach grows ever more fervent in some quarters. Dahlia Lithwick explores the legal and constitutional questions surrounding impeachment with constitutional scholar and Harvard Law Professor Laurence Tribe, co-author of To End a Presidency - The Power of ImpeachmentPlease let us know what you think of Amicus. Join the discussion of this episode on Facebook. Our email is amicus@slate.com.Podcast production by Sara Burningham.Learn more about your ad choices. Visit megaphone.fm/adchoices