Undertaking a personal/group humanitarian mission to a country like NK is dangerous enough without flaunting the rules but having a church's name on the pages and evangelical materials is just asking for trouble. An outright travel ban may be the only thing that keeps well intentioned people from getting into trouble and costing the taxpayers a small fortune.
What is concerning is the pastor's comments "while in the labour camp, Mr. Lim said he read more than 100 books and watched many propaganda films about North Korea’s history, allowing him to “grasp and gain a deeper understanding of the 70-year history that formed the nation.” Hopefully he realizes that what he read and saw were propaganda and does not reflect any of the truth, only the party line.