Impeachment hearings live updates: Vindman, three other key witnesses scheduled today in House inquiry

Four key witnesses from the White House and State Department are testifying before the House Intelligence Committee on Tuesday, including three who listened in to the July phone call between President Trump and Ukrainian President Volodymyr Zelensky that is at the heart of the impeachment inquiry.

In what is expected to be a long and dramatic day, lawmakers are set to hear sworn testimony from Lt. Col. Alexander Vindman, a senior National Security Council official, and Jennifer Williams, an adviser to Vice President Pence, in a morning session. Both have...