WASHINGTON, D.C. —
Democratic Sen. Joe Manchin of West Virginia and Republican Sen. Richard Burr of North Carolina were the main negotiators, with Republican Sen. Lamar Alexander of Tennessee and Durbin filling the role of mediators. Sen. Angus King, I-Maine, Sen. Tom Coburn, R-Okla., and Sen. Tom Carper, D-Del., also were pushing the compromise to colleagues.
A senior administration official said the White House, too, was involved in the negotiations and that the White House supported the agreement. The official was not authorized to discuss the negotiations on the record and spoke on condition of anonymity.