Bernie Sanders (I-Vt.) was unconvinced. He demanded Kennedy address some of the merchandise sold by Children’s Health Defense, the anti-vaccine organization Kennedy started. “On their website, they are selling what’s called onesies ― these little things,

Kennedy appeared before the Senate Finance Committee on Wednesday as he seeks confirmation as the nation's health secretary.

Senator Bernie Sanders, Independent of Vermont, asked Robert F. Kennedy Jr. to disavow baby onesies with anti-vaccination slogans. The clothes are sold by a nonprofit Mr. Kennedy co-founded.