Now Playing: This day in history: Jan. 23, 1998
Now Playing: Government shutdown enters 5th week
Now Playing: President Trump announces travel to Dover Air Force Base
Now Playing: Gillibrand highlights family, children issues in Iowa
Now Playing: SPECIAL REPORT: Trump: DACA extension for full wall funding
Now Playing: Trump will extend ‘Dreamers,’ TPS protection in exchange for full border wall funding
Now Playing: Cohen acknowledges rigging polls for Trump in 2014 and 2015
Now Playing: Pelosi cancels trip, accuses White House of security leak
Now Playing: Family separation may have hit thousands more migrant children than reported
Now Playing: Furloughed workers in rural areas struggle to make ends meet in shutdown
Now Playing: White House announces second summit with North Korea’s Kim Jong Un
Now Playing: Rudy Giuliani rants against Mueller investigation
Now Playing: dismisses Pelosi’s request to postpone State of the Union address
Now Playing: Graham says Trump’s statements have emboldened ISIS in Syria
Now Playing: Pentagon’s missile defense review looks at new space technologies, lasers
Now Playing: Trump strikes back, postpones Speaker Pelosi’s overseas trip due to shutdown
Now Playing: Alexandria Ocasio-Cortez schools House Democrats on Twitter
Now Playing: Shutdown takes financial toll on furloughed workers with disabilities
Now Playing: Pelosi asks President Trump to delay State of the Union address as shutdown continues
Now Playing: Chef Jose Andres opens restaurant to serve federal workers for free
