Robert F. Kennedy Jr. is telling senators considering his nomination to lead the government’s health agencies he merely wants transparency about vaccines.

Robert F. Kennedy Jr. is distancing himself from his anti-vaccine work as he seeks to become the leader of the nation’s top health agency under President Donald Trump, according to government ethics documents released on Wednesday.

The roundtable, convened by Sen. Bernie Sanders (I-Vt.) clearly served as a prep session ahead of the confirmation hearings next week for Trump’s pick to lead the agency, Robert F. Kennedy Jr. RFK Jr. has questioned whether vaccines are safe, asserted that they cause autism and said they haven’t been studied enough.