Trump skips Iowa evangelical group's Republican candidate event and feuds with GOP Iowa governor

Former President Donald Trump won't be among the GOP presidential candidates gathering in Des Moines Friday for the Family Leadership summit, which is expected to attract over 2,000 Iowa GOP voters.  

Bob Vander Plaats, the president and CEO of the Family Leader, told CBS News political correspondent Caitlin Huey-Burns that Trump is "making a mistake" by skipping the group's annual conference. 

"He is choosing not to show up, and I don't think it is just a smart idea on his part," Vander Plaats said.