Latest details on George H.W. Bush hospitalization Video

Now Playing: Former President George W. Bush speaks on the passing of his mother

Now Playing: Why Don’t We gives acoustic performance of ‘Trust Fund Baby’

Now Playing: Rachel Weisz compares her new romance drama to ‘Shape of Water’

Now Playing: Meek Mill released from prison

Now Playing: Why Don’t We gives a special live performance of ‘Trust Fund Baby’

Now Playing: Ronan Farrow on the ‘transformation’ in America

Now Playing: Magician David Blaine performs tricks on ‘GMA’

Now Playing: ‘Dancing With the Stars’ couple welcomes twins

Now Playing: What are the new rules in a post-#MeToo workplace?

Now Playing: Does dark chocolate make you smarter?

Now Playing: Kourtney Kardashian meets with lawmakers to talk clean cosmetics

Now Playing: Guessing game continues for name of new royal baby

Now Playing: New concerns about fake reviews on Amazon

Now Playing: Ex-NFL cheerleaders offer to settle lawsuit for league meeting

Now Playing: Husband of woman killed on Southwest flight speaks out

Now Playing: Latest details on George H.W. Bush hospitalization

Now Playing: Hear the 911 call that led to capture of Waffle House suspect

Now Playing: New details about suspect in deadly Toronto attack

Now Playing: White House says Trump will defend VA nominee

Now Playing: Trump, first lady host 1st state dinner