- Susan M. Collins Senator from ME, Republican
- Christopher A. Coons Senator from DE, Democratic
- John Cornyn Senator from TX, Republican
- Catherine Cortez Masto Senator from NV, Democratic
- Tom Cotton Senator from AR, Republican
- Kevin Cramer Senator from ND, Republican
- Mike Crapo Senator from ID, Republican
- Ted Cruz Senator from TX, Republican
- John R. Curtis Senator from UT, Republican
- Steve Daines Senator from MT, Republican
- Tammy Duckworth Senator from IL, Democratic
- Richard J. Durbin Senator from IL, Democratic
- Joni Ernst Senator from IA, Republican
- Dianne Feinstein Senator from CA, Democratic
- John Fetterman Senator from PA, Democratic
- Deb Fischer Senator from NE, Republican
- Ruben Gallego Senator from AZ, Democratic
- Kirsten E. Gillibrand Senator from NY, Democratic
- Lindsey Graham Senator from SC, Republican
- Chuck Grassley Senator from IA, Republican