Unusual. Improper. Inappropriate. Wrong: Officials Decry Trump's Pressure on Ukraine to Probe Bidens

"I couldn't believe what I was hearing." Those were the words of Army Lieutenant Colonel Alex Vindman during Tuesday's House impeachment inquiry hearings, describing his reaction to a July phone call between President Trump and Ukrainian President Volodymyr Zelensky. During the call, Trump pressured Zelensky to investigate his political rival Joe Biden and his son Hunter, who served on the board of a Ukrainian natural gas company, Burisma. Vindman, who is the director for European affairs at the National Security Council, testified along with Jennifer Williams, a Russia adviser for Vice President Pence, in the first of two hearings on Tuesday. Former U.S. special envoy to Ukraine Kurt Volker and Tim Morrison, former senior director for European and Russian affairs on the National Security Council, also testified. Republican lawmakers repeatedly criticized the impeachment process, while Democrats defended it. From Washington, D.C., we speak to Andy Kroll, D.C. bureau chief for Rolling Stone.