Evangelical broadcaster James Dobson Wednesday praised Ted Cruz's bid for the Republican presidential nomination, saying in a new television ad that the Texas senator is critical to naming more conservatives to the Supreme Court. "With Justice Scalia's death, we need a president who will defend the Constitution and nominate conservatives to the high court," Dobson, founder of Focus on the Family, said in endorsing Cruz as a private citizen. "I know Ted," Dobson said. "He's a Christian family man of the utmost integrity."