BATON ROUGE, La. (AP) — Sen. Bill Cassidy has emerged as a central figure in the confirmation of Robert F. Kennedy Jr., whose nomination to health and human services secretary poses an equally consequential moment for the second-term Republican facing an uncertain political future in Louisiana.

Senate Health Committee Chair Bill Cassidy (R-La.) said at the end of Thursday’s hearing he is “struggling” with whether to confirm Robert F. Kennedy Jr .as Health and Human Services secretary. Cassidy,

Robert F. Kennedy Jr.’s opinions about vaccine safety, both past and present, appeared likely to lead at least a few Senate Republicans to vote against his nomination following a second confirmation hearing Thursday.