In this episode of The Beat, Ari Melber reports breaking news of House Dems subpoenaing WH staff in escalating impeachment probe. 0.00 - Mounting evidence against President Trump14.25 - NBC: CIA's top lawyer made criminal referral to DOJ about whistleblower's complaint31.36 - Unhinged: Trump's rhetoric grows more erratic under pressure from impeachment probe37.08 - Ari Melber: Does Tucker Carlson have a point on impeachment?40.07 - Music exec Irv Gotti and reporter Sam Seder on the BeatLearn more about your ad choices. Visit megaphone.fm/adchoices