Clinton and Trump meet for second presidential debate

Democratic presidential candidate Hillary Clinton meets with people after the second presidential debate at Washington University in St. Louis.

Republican presidential candidate Donald Trump after the second presidential debate at Washington University in St. Louis. Mandatory Credit: Jack Gruber-USA TODAY NETWORK (Via OlyDrop)

Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump participate in the second presidential debate at Washington University in St Louis.

Democratic presidential candidate Hillary Clinton speaks during the second presidential debate at Washington University in St. Louis.

Republican presidential candidate Donald Trump listens during the second presidential debate at Washington University in St. Louis.

Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump speak during the second presidential debate at Washington University in St. Louis.

Washington University in St. Louis students pack the Danforth University Center to watch the second presidential debate.

Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump speak during the second presidential debate at Washington University in St Louis.

Republican presidential candidate Donald Trump speaks during the second presidential debate at Washington University in St. Louis.

Democratic presidential candidate Hillary Clinton gestures during the second presidential debate at Washington University in St. Louis.

Former President Bill Clinton watches the second presidential debate at Washington University in St Louis.

Republican presidential candidate Donald Trump makes a point during the second presidential debate at Washington University in St. Louis.

Democratic presidential candidate Hillary Clinton speaks during the second presidential debate at Washington University in St. Louis.

Republican presidential candidate Donald Trump speaks during the second presidential debate at Washington University in St. Louis.

Hundreds of Washington University in St. Louis students gathered on Mudd Field to watch the second presidential debate.

Democratic presidential candidate Hillary Clinton speaks during the second presidential debate at Washington University in St. Louis.

Democratic presidential candidate Hillary Clinton speaks while Republican presidential candidate Donald Trump watches during the second presidential debate at Washington University in St. Louis.

Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump take part in the second presidential debate at Washington University in St Louis.

Republican presidential Trump speakes during the second presidential debate at Washington University in St Louis.

Democratic presidential candidate Hillary Clinton speakes during the second presidential debate at Washington University in St Louis.

Republican presidential candidate Donald Trump speaks as Democratic presidential candidate Hillary Clinton listens during the second presidential debate at Washington University in St. Louis.

The Trump family takes their seat in the hall before the second presidential debate at Washington University in St. Louis.

Co-moderators Anderson Cooper of CNN and Martha Raddatz of ABC at the second presidential debate at Washington University in St Louis.

Jessie Jackson arrives in the hall prior to the second presidential debate at Washington University in St. Louis.

Missouri Gov. Jay Nixon, left, and House Minority Leader Nancy Pelosi talk before the second presidential debate at Washington University in St. Louis.

Donald Trump Jr. walks into the hall at Washington University in St. Louis before the second presidential debate.

Washington University in St. Louis student Amanda Jung hangs "Vote" signs before the second presidential debate.

Brady Mcannich, left, of Highland, Ill., and John Hipskind, right, of St. Louis, pose with Karl Rove prior to the second presidential debate at Washington University in St. Louis.

Student Kinaan Patel sets up "boxing robots" on campus before the second presidential debate at Washington University in St. Louis.

Ryan Delabar, 20, walks across the Washington University in St. Louis campus decked out in American flags before the second presidential debate.

Washington University in St. Louis students walk through campus with signs supporting Hillary Clinton before the second presidential debate.

US Secret Service agents pose with a Budweiser Clydesdale on the Campus of Washington University in St. Louis, Mo. on Oct. 9, 2016, site of the second televised presidential debates between Republican nominee Donald Trump and his Democratic counterpart Hillary Clinton.

Democratic presidential candidate Hillary Clinton arrives at Lambert –St. Louis International Airport in St. Louis, on Oct. 9, 2016, for the second presidential debate.

Sen. Jeff Sessions, R-Ala., arrives at the debate area Sunday morning before the second presidential debate at Washington University in St. Louis.

Clinton campaign manager Robby Mook looks out at the crowd.

Journalists from all across the United States work in the filing center at Washington University in St. Louis before the debate.

A crowd of people hold signs during an MSNBC broadcast on the campus of Washington University in St. Louis. on Oct 9, 2016, before the second presidential debate between Democratic nominee Hillary Clinton and Republican nominee Donald Trump.

Students stand in on the stage during a lighting test on Sunday morning, Oct. 9, 2016, before the second presidential debate between Republican presidential nominee Donald Trump Democratic presidential nominee Hillary Clinton at Washington University in St. Louis.

Stage hands are seen on set during lighting checks Oct. 9, 2016, before the debate.

The set is prepared Oct. 8, 2016, for the presidential debate.

Students stand in on the stage during preparations for the second presidential debate at Washington University in St. Louis on Oct. 8, 2016.

Students stand in on the stage during preparations Oct. 8, 2016.

A security officer walks his dog across the debate hall as preparations are made for the second presidential debate Oct. 8, 2016.