Thousands of delegates descend on a tightly secured Cleveland arena for the opening of the Republican National Convention, with Donald Trump's wife playing character witness as the tough-talking mogul seeks to lock up his party's presidential nomination. (ROBYN BECK/AFP/Getty Images)
Republican National Convention: Day One
The street has chalk graffiti as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
People wear cowboy hats during the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
A woman holds a sign as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio.(Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
A man wears a large Trump button as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
Two men hold politcal merchandise as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
A man wears a cowboy hat as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
A person dressed in polar bear costume holds a sign as people gather downtown for the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Jeff J Mitchell/Getty Images)
Republican National Convention: Day One
Members of the Bikers for Trump motorcycle group attend a rally for Donald Trump on the first day of the Republican National Convention (RNC) on July 18, 2016 in downtown Cleveland, Ohio. (Photo by Spencer Platt/Getty Images)
Republican National Convention: Day One
A Donald Trump supporter poses with a gun while attending a rally for Donald Trump on the first day of the Republican National Convention (RNC) on July 18, 2016 in downtown Cleveland, Ohio. (Photo by Spencer Platt/Getty Images)
Republican National Convention: Day One
A Republican delegate poses for a photo as she waits to board a bus to the Quicken Loans Arena before the opening of the Republican National Convention on July 18, 2016 in Cleveland, Ohio.
(ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
Republican National Convention: Day One
A Donald Trump supporter attends a rally for Trump on the first day of the Republican National Convention (RNC) on July 18, 2016 in downtown Cleveland, Ohio. (Photo by Spencer Platt/Getty Images)
Republican National Convention: Day One
US Senator Jeff Sessions (R-AL) visits the stage before the opening of the Republican National Convention on July 18, 2016 in Cleveland, Ohio.
(ROBYN BECK/AFP/Getty Images)
Republican National Convention: Day One
A young Trump supporter attends a rally in downtown Cleveland in the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio.(Photo by Spencer Platt/Getty Images)
Republican National Convention: Day One
A Trump supporter attends a rally with his pistol in downtown Cleveland in the first day of the Republican National Convention (RNC) on July 18, 2016 in Cleveland, Ohio. (Photo by Spencer Platt/Getty Images)
Republican National Convention: Day One
Tom Pauken, Republican Delegate of Texas takes off his hat before the start of the first day of the Republican National Convention on July 18, 2016 at the Quicken Loans Arena in Cleveland, Ohio. (Photo by John Moore/Getty Images)
Republican National Convention: Day One
Pamphlets on the chairs of the state delegates on the floor on the first day of the Republican National Convention on July 18, 2016 at the Quicken Loans Arena in Cleveland, Ohio. (Photo by John Moore/Getty Images)
Republican National Convention: Day One
Jeff Gunder, a member of the Bikers for Trump motorcycle group, attends a rally for Donald Trump on the first day of the Republican National Convention (RNC) on July 18, 2016 in downtown Cleveland, Ohio. (Photo by Spencer Platt/Getty Images)
