WATCH: Government shutdown day 21

  • Now Playing: Government shutdown affects air travel




  • Now Playing: Families brace for the impact of the government shutdown




  • Now Playing: Government shutdown leads to a new list of demands




  • Now Playing: Government shutdown showdown continues




  • Now Playing: Government shutdown day 21




  • Now Playing: Shutdown leaves many lawmakers and federal employees frustrated




  • Now Playing: DC mayor signs ‘LOVE Act’ allowing marriage licenses during shutdown




  • Now Playing: Supreme Court says Justice Ginsburg’s recovery is ‘on track’




  • Now Playing: Michael Cohen to testify before Congress




  • Now Playing: Democratic strategist on 2020: ‘Super Bowl of politics is just starting up’




  • Now Playing: Friday Rewind: Government shutdown continues




  • Now Playing: Government shutdown 1 day away from setting record




  • Now Playing: Trump’s former lawyer to testify before Congress




  • Now Playing: Many federal workers prepare to miss a paycheck




  • Now Playing: Will Trump declare a national emergency?




  • Now Playing: Trump visits Texas as border wall stalemate reaches day 20 of gov’t shutdown




  • Now Playing: House Speaker Nancy Pelosi slams president for shutdown




  • Now Playing: Trump visits border, says he ‘probably’ will declare emergency if no deal on wall




  • Now Playing: In Egypt, Pompeo defends US withdrawal from Syria




  • Now Playing: President Donald Trump walks out of shutdown meeting