Sen. Ted Cruz attends campaign event with Glenn Beck in Ankeny, Iowa

Texas Sen. Ted Cruz, 2016 Republican presidential candidate, greets supporters with his wife, Heidi, and daughters Caroline (L) and Catherine at the conclusion of a "Keep the Promise" rally at Faith Baptist Bible College, January23, 2016, in Ankeny, Iowa. Cruz is running against a large field of GOP candidates, including real estate mogul Donald J. Trump, Florida Sen. Marco Rubio and retired neurosurgeon Ben Carson ahead of Iowa's first-in-the-nation caucuses, February 1. Photo by Mike Theiler/UPI