A clash between Bernie Sanders and Robert F. Kennedy Jr. at his confirmation hearing for Secretary of Health and Human Services took an unexpected turn on Wednesday when the senator defined a "onesie" in a line of questioning about Kennedy Jr.

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

Sen. Bernie Sanders (I-Vt.) grilled Robert F. Kennedy Jr., President Trump’s nominee to lead the Department of Health and Human Services, about a baby onesie sold from a group he founded

Sen. Bernie Sanders (I., Vt.), thought to be a possible “yes” vote on Robert F. Kennedy Jr. because they have some shared views on food safety and obesity, grilled Kennedy on his views on abortion and vaccines.

Bernie Sanders confronted RFK Jr. on his vaccine stance during his confirmation hearing, calling out his former organization for selling anti-vaxx onesies.

Senator Bernie Sanders (I-VT) demanded to know whether Robert F. Kennedy Jr. is "supportive" of onesies being sold by Children's Health Defense.

Vermont Senators Bernie Sanders and Peter Welch, along with New Hampshire Sen. Maggie Hassan, were among lawmakers Wednesday from both parties grilling Robert F. Kennedy Jr., President Trump’s pick for health secretary.

The time Robert F. Kennedy Jr. spent in New Hampshire as a presidential candidate became the subject of key moments during his U.S. Senate confirmation hearing on Wednesday.

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,

Senator Bernie Sanders from Vermont ripped into possible Health and Human Services Secretary Robert F. Kennedy Jr. on Wednesday after the man failed to answer as to whether or not healthcare was a basic human right.

Sen. John Fetterman (D., Pa.), who had said he was open to hearing out Robert F. Kennedy Jr., expressed more doubts about the Health and Human Services nominee after his first confirmation hearing Wednesday before the Senate Finance Committee.