At a Senate hearing Wednesday, Democratic and Republican senators sought to tie Kennedy down on how he’d approach the issue as health secretary, if confirmed.

President Donald Trump’s nominee to run the Department of Health and Human Services, Robert F. Kennedy Jr., was in the hot seat Wednesday as he was peppered with more than three hours of detailed questions from senators during the first of two confirmation hearings.

Robert F. Kennedy Jr.’s alternating views on vaccines, reproductive rights and public health issues were a central focus at his first confirmation hearing Wednesday, with Democratic senators expressing dismay at his nomination and Republicans signaling he’ll likely have their support.