WATCH: McCain replacement could be key Supreme Court vote

WATCH: McCain replacement could be key Supreme Court vote
  • Now Playing: One final salute to John McCain



  • Now Playing: Kavanaugh confirmation hearings begin with protest from Democrats



  • Now Playing: New poll shows low support for Kavanaugh’s confirmation



  • Now Playing: Confirmation battle begins for Trump’s Supreme Court nominee



  • Now Playing: Trump steams at Attorney General Jeff Sessions



  • Now Playing: White House withholds 100,000 pages of documents related to Kavanaugh



  • Now Playing: Ayanna Pressley: ‘We are at a crossroads’



  • Now Playing: Supreme Court battle continues as Kavanaugh hearings approach



  • Now Playing: Anti-Ted Cruz billboard features Trump tweets



  • Now Playing: Despite Democrats’ opposition, Kavanaugh hearings on track for Tuesday



  • Now Playing: Supreme Court battle heats up



  • Now Playing: Matthew Dowd on Trump: ‘For a reality TV star, he seems awful divorced from reality’



  • Now Playing: Cokie Roberts: At McCain ceremony, ‘we were aware of the person who wasn’t there’



  • Now Playing: Through speakers at funeral, late Sen. John McCain’s voice ‘defiant as ever’



  • Now Playing: Leon Panetta: Mueller’s report ‘will ultimately determine whether’ to impeach



  • Now Playing: ‘Pink wave’ of candidates has camouflage tint with increase in female vets



  • Now Playing: GOP Senator on Kavanaugh nomination: ’30 years ago, he would have passed unanimously’



  • Now Playing: Trump lashed out on trade with Canada and the Russian investigation



  • Now Playing: Bipartisan tribute to John McCain at US Capitol



  • Now Playing: Memo alleges Trump nodded approval to proposed Russia meeting



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