Now Playing: Prosecutor: Manafort worked with Russian colleague
Now Playing: Republican National Committee reverses course, will support Roy Moore in Senate race
Now Playing: Secretary of State Rex Tillerson promises ‘quick wins’ for US foreign policy
Now Playing: Rep. Conyers announces he’s retiring today, endorses son to fill seat
Now Playing: Former Trump campaign manager Corey Lewandowski on Roy Moore, Russia probes and more
Now Playing: Nov. 14, 1995: When the US government shut down
Now Playing: RNC reverses decision, will now fund Roy Moore
Now Playing: Veteran Rep. John Conyers announces he is retiring
Now Playing: GOP senators weigh in on Ala. Senate race
Now Playing: Trump weighs moving US Embassy from Tel Aviv to Jerusalem
Now Playing: ‘The Briefing Room’: Rep. John Conyers steps down
Now Playing: Nevada Democrat accused of sexual misconduct says he won’t resign
Now Playing: President ‘still looking into a lot of facts’ on Jerusalem action, embassy move, Kushner says
Now Playing: Roy Moore ahead in Alabama Senate race in one poll, tied with Democrat in another
Now Playing: Trump offers support for embattled Republican Roy Moore
Now Playing: Trump announces major changes for Bears Ears, Grand Staircase monuments
Now Playing: Supreme Court allows Trump travel ban enforcement
Now Playing: President signs proclamations modifying national monuments
Now Playing: Trump urging longest-serving Republican senator to run for re-election
Now Playing: Trump: ‘I feel badly’ for Michael Flynn
