President Trump is promising to sweep homeless people off America’s streets. One controversial part of his plan could force thousands of people into institutions where they would be treated “long-term” for for addiction and mental illness. Critics say the policy raises big concerns about civil liberties and cost. But parts of this idea - known as “civil commitment” are gaining traction with some Democratic leaders.For sponsor-free episodes of Consider This, sign up for Consider This+ via Apple Podcasts or at plus.npr.org. Email us at considerthis@npr.org.This episode was produced by Connor Donevan and Erika Ryan, with audio engineering by Simon-Laslo Janssen. It was edited by Andrea de Leon and Courtney Dorning.