Trump caused outrage among hundreds of renowned medical groups after he signed an executive order this month recommending splitting up the MMR vaccine into separate shots

Dr. Mehmet Oz was pressed on comments Trump made calling the MMR vaccine, which protects against measles, \

Dr. Mehmet Oz, the administrator of the Centers for Medicare and Medicaid Services, said the MMR vaccine is "not a lethal vaccine," despite President Trump's claims in recent days.