This day in history: Jan. 23, 1998 Video

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