swain says the defendant received a free pass from the city of philadelphia under the part of prisons. the secretary of homeland security kirstjen neilsen had this to say. >> it could have been prevented and should have been prevented. we know the american people better. rob: the hog farmer questions over the disappearance of mollie tibbetts admits to taking a polygraph test. fbi agents asked him if he had anything to do with the 20-year-old's disappearance, he told them no but doesn't know the results of the test. he denied knowing anything about molly and repeatedly said he thinks some guy probably has her. molly went missing three weeks ago while on a run in iowa. the reward is $316,000. 20,000 people ordered to evacuate as a massive wildfire