Republican presidential candidate, Sen. Ted Cruz, R-Texas, greets a supporter during a campaign event, Saturday, Jan. 30, 2016, in Ames, Iowa.
Republican presidential candidate, Sen. Ted Cruz, R-Texas, greets a supporter during a campaign event, Saturday, Jan. 30, 2016, in Ames, Iowa. Mary Altaffer AP
Republican presidential candidate, Sen. Ted Cruz, R-Texas, greets a supporter during a campaign event, Saturday, Jan. 30, 2016, in Ames, Iowa. Mary Altaffer AP