Bill Cassidy, the moderate Republican senator who helms the Senate Health Committee, gave a feeble reaction to the committee’s Wednesday hearing with fired CDC Director Susan Monarez. As a physician, Cassidy’s pro-vaccination stance has put him at odds with President Trump’s anti-vax health secretary, Robert F. Kennedy Jr., whom Cassidy voted to confirm in February. At a September 4 hearing, for instance, the Louisiana senator questioned how Kennedy could reconcile being staunchly anti-vaccine