Now Playing: Trump declares opioid crisis a public health emergency
Now Playing: Rex Tillerson admires outdoor art with a joke
Now Playing: President Trump declares opioid crisis a ‘public health emergency’
Now Playing: The Note: 2 senators say ‘enough’ to Trump, but will others agree?
Now Playing: Trump lashes out at GOP senator after he announced he’s not running again
Now Playing: Senate GOP moves to repeal consumer rule
Now Playing: Trump thinks Republican Party has ‘pretty good unity’
Now Playing: Trump says 401(k)s are ‘one of the great benefits to the middle class’
Now Playing: Trump talks to reporters before trip to Texas
Now Playing: Jeff Flake to exit Senate, blasts Trump
Now Playing: ‘I was extremely nice’ to widow of fallen soldier, says Trump after criticism of condolence call
Now Playing: Family of fallen soldier ‘speechless’ over $25K check from Trump
Now Playing: Trump is ‘debasing’ the nation, GOP senator says
Now Playing: CNN launches ‘facts first’ ad
Now Playing: The Note: Trump tries to rally Republican senators on tax reform
Now Playing: Protester throws Russian flags at Trump before Capitol Hill lunch
Now Playing: Republican Sen. Flake won’t seek re-election, cites Trump era
Now Playing: Corker, Flake loom over White House press briefing
Now Playing: Trump touts trade amid criticism over call to soldier’s widow
Now Playing: McCain blasts Vietnam War ‘bone spur’ deferments in apparent swipe at Trump