Republican presidential candidate Donald Trump reacts as he walks up to the stage during a rally Tuesday, Feb. 23, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez)
Commentator Glenn Beck, at left, gives a copy of Don Quijote to a supporter at a rally for Republican presidential candidate, Sen. Ted Cruz, R-Texas, Monday, Feb. 22, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez) ** FILE **
Republican presidential candidate Ben Carson speaks during a town hall meeting Sunday, Feb. 21, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez) ** FILE **
Republican presidential candidate Ben Carson pauses while speaking during a town hall meeting Sunday, Feb. 21, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez)
People line up to participate in the Democratic caucus at the University of Nevada Saturday, Feb. 20, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez)
Actress Susan Sarandon speaks during a rally for Democratic presidential candidate, Sen. Bernie Sanders, I-Vt., Friday, Feb. 19, 2016, in Reno, Nev. (AP Photo/Marcio Jose Sanchez)
In this Sept. 9, 2014, file photo, Apple CEO Tim Cook speaks during an announcement of new products in Cupertino, Calif. (AP Photo/Marcio Jose Sanchez, File)
San Jose Sharks center Chris Tierney (50) celebrates his goal with teammate Brent Burns, right, during the first period of an NHL hockey game against the Arizona Coyotes on Saturday, Feb. 13, 2016, in San Jose, Calif. (AP Photo/Marcio Jose Sanchez)
Carolina Panthers quarterback Cam Newton (1) jokes with teammates during practice in preparation for the Super Bowl 50 football game Friday Feb. 5, 2016 in San Jose, Calif. (AP Photo/Marcio Jose Sanchez)
Golden State Warriors' Stephen Curry celebrates from the sideline as teammate Shaun Livingston scores during the first half of an NBA basketball game against the San Antonio Spurs Monday, Jan. 25, 2016, in Oakland, Calif. (AP Photo/Marcio Jose Sanchez)
San Jose Sharks' Tommy Wingels, left, collides with Los Angeles Kings' Jake Muzzin during the first period of an NHL hockey game, Sunday, Jan. 24, 2016, in San Jose, Calif. (AP Photo/Marcio Jose Sanchez)
Pittsburgh Penguins' Evgeni Malkin (71) scores past San Jose Sharks goalie Martin Jones during the second period of an NHL hockey game Tuesday, Dec. 1, 2015, in San Jose, Calif. (AP Photo/Marcio Jose Sanchez)
Stanford quarterback Kevin Hogan (8) during an NCAA college football game against Washington Saturday, Oct. 24, 2015, in Stanford, Calif. (AP Photo/Marcio Jose Sanchez)