What do you get when you put an anti-vax conspiracy theorist in charge of the U.S. Health Department? A dangerous crackpot who scares the public into thinking that the measles vaccination causes blindness.

Experts say vitamin A can mitigate measles but does not protect those who are unvaccinated from getting the disease, and RFK Jr. says immunization is a "freedom of choice."

I do blame him and others like him who, for the past 20 years, have been spreading lies about vaccines," said Rep. Kim Schrier (D-Wash.).