Top Republican 'struggling' with RFK Jr.'s nomination over Kennedy's vaccine views

During Wednesday's hearing, Kennedy tried to assuage concerns from both sides of the aisle on his vaccine stance -- repeatedly claiming he is not anti-vaccine but "pro-safety" and vowing not to discourage people from taking immunizations for measles and polio.

Thursday, he's pushing back more to defend some of his past controversial views and statements. He's also avoiding yes or no questions on where he stands on several vaccines and other programs, leaving several Democrats exasperated.

So far, no Democrats have said they will support his nomination. His answers so far in the confirmation process seem unlikely to change that.

Sen. Maggie Hassan, of New Hampshire, asked Kennedy a series of questions about parts of Medicare, over which Kennedy seemed to stumble.

Kennedy incorrectly said Medicare Part A was mainly for primary care or physicians. In fact, Medicare A covers inpatient care in hospitals, critical access hospitals and skilled nursing facilities.

He failed to describe what Medicare Part B is, which covers medically necessary services and supplies, and preventive services.

"Mr. Kennedy, you want us to confirm you to be in charge of Medicare, but it appears that you don't know the basics of this program," Hassan said.

Sen. Josh Hawley asked Kennedy if he would rescind a rule from the HHS issued under the Biden administration over transgender discrimination,

Under the Affordable Care Act, physicians in the U.S. who receive federal funding must perform medical treatments based on sex, even if they do not support it.

In 2021, the Biden administration issued a rule saying this policy included transgender people.

Kennedy said he would, adding, “That rule is anti-science.”

Kennedy cast doubt on the lifesaving benefits of the COVID-19 vaccines, saying he doesn't think that "anybody" can say the vaccines saved millions of lives.

A 2022 study from the Yale School of Public Health and University of Maryland Medical School estimated the vaccine saved 3 million lives and prevented 18 million hospitalizations.

Sen. Bernie Sanders, I-Vt., asked Kennedy about that study, as well as President Donald Trump's comments calling the vaccine "one of the greatest miracles of the ages," and asked if he agreed that vaccines saved millions of lives.

"I don't know. We don't have a good surveillance system, unfortunately," Kennedy said.

-ABC News' Cheyenne Haslett