Bill Clinton eulogizes longtime friend John Dingell as ‘stand-up guy’ Video

Now Playing: Trump expected to sign border bill and declare a national emergency for more wall funding
Now Playing: The influence of politics on millennial voters
Now Playing: SPECIAL REPORT: President Trump to declare national emergency
Now Playing: Bill Clinton eulogizes longtime friend John Dingell as ‘stand-up guy’
Now Playing: McConnell: Trump will sign border bill, declare national emergency
Now Playing: William Barr confirmed by Senate to become attorney general
Now Playing: One-on-one with EPA Administrator Andrew Wheeler
Now Playing: Countdown to another possible govt shutdown as new border deal hits snag
Now Playing: Are new Democrats too extreme?
Now Playing: Rep. Ilhan Omar responds to attack from Trump
Now Playing: Congress races to pass budget deal
Now Playing: Trump signals he could sign compromise deal to avoid shutdown
Now Playing: What is the Green New Deal?
Now Playing: President Trump: ‘A shutdown would be a terrible thing’
Now Playing: ‘We’re looking for landmines’ in border bill, Trump says, before he’ll sign it
Now Playing: Could the border deal unravel?
Now Playing: Trump ‘not happy’ with potential new border security deal
Now Playing: Trump ‘not happy’ with border security proposal
Now Playing: Senate Intel chairman slams Cohen for missing testimony due to ‘medical needs’
Now Playing: Senators at odds over Russia probe