“I think somebody has to find out,” Trump said during an interview on "Meet the Press."
Kennedy, who comes from one of America’s most prominent political families, is known for his anti-vaccine beliefs and has repeatedly spread false or misleading claims regarding vaccines, fluoride and other topics. He gained national prominence in part because of his opposition to the childhood vaccine for measles, mumps and rubella. Kennedy has pushed debunked claims that the vaccine was linked to autism, among other conspiracy theories.