Bill Cassidy

Cassidy's most notable achievement is becoming the first physician to chair the Senate HELP Committee since 1933, a position that allows him to influence health-care policy directly. He also played a key role in the 2017 Graham-Cassidy bill, which, though unsuccessful, shaped the Republican health-care debate. His willingness to break with party leadership on the Trump impeachment demonstrated political courage, though it cost him his seat. His medical work in Louisiana, including vaccinating 36,000 children and running a post-Katrina clinic, highlights his commitment to public health.