Sen. Bill Cassidy (R-La.) provided an evasive, circular answer when asked on CNBC’s “Squawk Box” Thursday over whether he has remorse over being the key vote that advanced last year’s nomination of Robert F. Kennedy Jr. for the position of Health and Human Services secretary and for supporting Erica Schwartz, President Donald Trump’s nominee to be the next director of the Centers for Disease Control and Prevention.Cassidy, a physician himself, has recently publicly clashed with Kennedy, a known anti-vaccine conspiracy theorist, over vaccine policies and scientific misinformation. His CNBC appearance to discuss vaccines came days after Trump signed an executive order retooling the childhood vaccination schedule, spacing them out into multiple medical visits. After Cassidy delivered an opinion lamenting the potential impact of the increased number of visits, “Squawk Box” co-host Leslie Picker made a note to remind Cassidy of his backing of Kennedy and Schwartz, then asked him, “Do you regret those decisions?”“Well, so first, this is a presidential executive order. RFK told me he was not going to change the ACIP,” Cassidy responded, referencing the Advisory Committee on Immunization Practices, which creates official federal recommendations and schedules for vaccine use. “So if you’re going to tell me that somebody didn’t tell me the truth, and I should have like, you know, seen in the future that they were not going to tell the truth. You can say ‘Oh Bill, you should have seen into the future,’ in which case I’d be on your show talking about the futures of stocks as opposed to vaccine policy,” he continued. Cassidy then said that he anticipates Schwartz “will do the right thing,” adding that she “made a point that her integrity was not in question.” He also added that Schwartz has “the spine of somebody who’s been a senior officer in the Coast Guard.” “She said, ‘I don’t need this job. My integrity is more important to me,’” he added. This is not the first time Cassidy has struggled to articulate his stance on his vote for Kennedy while also criticizing him. In June, Cassidy said Kennedy was building public health upon a “foundation of lies” while appearing on CBS’ “Face the Nation with Margaret Brennan.”But earlier this year on “Fox News Sunday,” Cassidy was evasive when he was asked again whether he regretted voting for Kennedy.“I’m often asked that, but I’d rather not make this personal like what [my feelings are],” he responded. “It should be about the health of the patient.”Watch Cassidy’s appearance on “Squawk Box” below. Skip to the 3:00 mark to hear his comments about RFK Jr.