IE 11 is not supported. For an optimal experience visit our site on another browser.
We apologize, this video has expired.

Trump steps up attacks on whistleblower as impeachment showdown looms


As President Trump steps up his attacks on the anonymous whistleblower at the heart of the impeachment investigation, the whistleblower is now offering to answer questions from Republican lawmakers under oath. NBC chief White House correspondent Hallie Jackson reports on TODAY.