Sondland's truthfulness under scrutiny as witnesses contradict his testimony

07:05

Democrats are questioning whether to bring perjury charges against Ambassador Gordon Sondland after several key impeachment witnesses have contradicted his testimony regarding Ukraine. Rep. Peter Welch tells Lawrence O'Donnell that after hearing from the career diplomats, Sondland "has some explaining to do" for his "sordid, self-serving" bidding of the president.