Sen. Ted Cruz, R-Texas, his wife Heidi, and their two daughters Catherine, 4, left, and Caroline, 6, right, practice walking on stage during a walk-through for Cruz's Monday morning speech where he will launch his campaign for president of the United States at Liberty University on Sunday, March 22, 2015 in Lynchburg, Va. Cruz will be the first major candidate in the 2016 race for president. (AP Photo/Andrew Harnik), APTOPIX