on science.
https://thehill.com/homenews/administration/556981-fauci-responds-to-gop-criticism-over-emails-its-all-nonsense
He has already been proven wrong on a number of issues. He can't really say his positions changed with the science, because people were arguing with him at various times for the particular stances he was taking. What information would somebody like Rand Paul have that Fauci didn't have access to? Or did Paul just understand the science better?