Julián Castro Backs Impeachment Effort & Condemns Trump's "Betrayal" of Kurds in Northern Syria

Turkey's government says its troops are prepared for an imminent assault on Kurdish fighters in northern Syria, after President Trump ordered U.S. troops to fall back from their positions on the Turkish-Syrian border. Kurdish fighters said they're bracing for a "humanitarian catastrophe." This follows warnings that former Kurdish allies of the U.S. who feel betrayed by President Trump will abandon thousands of prisoners captured during the U.S.-backed war against ISIS over the past two years. We speak to former housing secretary and 2020 Democratic presidential candidate Juliin Castro, who says Trump's move is a "stunning betrayal of allies."