Current GOP presidential frontrunner Donald Trump levied a personal attack against fellow Republican Ted Cruz at an Iowa campaign rally Friday night, disparaging the Texas Senator’s Cuban ancestry while questioning Cruz’s Christianity.Cruz has been soaring in recent national polls and is now seen by many as the favorite to win Iowa, a state that has the first official test of voters and has a high number of traditional values-based evangelical voters.“We’re doing really well with evangelicals,†Trump argued. “And by the way, and again, I do like Ted Cruz, but not a lot of evangelicals come out of Cuba, in...