The 10 senators — Collins, Bill Cassidy (R-La.), Joe Manchin III (D-W.Va.), Lisa Murkowski (R-Alaska), Rob Portman (R-Ohio), Mitt Romney (R-Utah), Jeanne Shaheen (D-N.H.), Kyrsten Sinema (D-Ariz.), Jon Tester (D-Mont.), and Mark R. Warner (D-Va.) — have met numerous times with the administration’s negotiators this week. Steve Ricchetti, counselor to the president; legislative affairs director Louisa Terrell and National Economic Council director Brian Deese have been representing the administration in talks.