(AP) SALT LAKE CITY -- Mitt Romney said Saturday that criticism of his Mormon religion by rival GOP presidential campaigns is happening too frequently. “Clearly, any derogatory comments about anyone’s faith—those comments are troubling. The fact they keep on coming up is even more troubling,” Romney said during a fundraising trip in the home state of The Church of Jesus Christ of Latter-day Saints. The Mormon church is one of the fastest-growing religions and claims about 12.5 million members worldwide. But many evangelical Christians in crucial primary states such as Iowa and South Carolina consider the faith a cult. Romney’s...