Lieutenant Colonel Alexander Vindman is the first current White House official to testify in the impeachment inquiry. He is the director of European affairs at the National Security Council, and he was on the phone call in which President Trump urged Ukrainian President Volodymyr Zelensky to open investigations into his political opponents. According to his opening statement, Vindman "did not think it was proper." CBS News chief congressional correspondent Nancy Cordes joins CBSN with the latest.
