Trump Impeachment Battle, Kurt Volker Deposition, Amber Guyger Sentencing The battle over impeachment heats up between Congress and the White House. Will the Trump administration comply with Congress' subpoenas? Kurt Volker will be the first official deposed in the inquiry. Who is he and why is he central to Congress' investigation? And in Dallas, former police officer Amber Guyger is sentenced to 10 years in prison for murdering Botham Jean.