AP Photo/Charles KrupaJeb Bush has laid out exactly why he thinks GOP presidential front-runner Donald Trump is a "jerk." Responding to a question from a potential Trump supporter at a town-hall event in New Hampshire on Wednesday, the former Florida governor said he called Trump a jerk after Trump appeared to mock the physical disability of New York Times journalist Serge Kovaleski in November. "When anybody disparages people with disabilities, it sets me off," Bush said.