Robert De Niro Defends Anti-Vaccine Doc

Actor and producer Robert De Niro explained his decision to pull the documentary Vaxxed from the Tribeca Film Festival on the Today show Wednesday, noting that he still has questions about a potential link between vaccinations and autism, though scientists have said definitively that a link does not exist.

"I, as a parent of a child who has autism, am concerned," De Niro said. "There's more to this than meets the eye.