Democratic sources on Wednesday said Sen. Tom CoburnThomas (Tom) Allen CoburnThe Hill's Morning Report — Presented by PhRMA — Worries grow about political violence as midterms approach President Trump’s war on federal waste American patients face too many hurdles in regard to health-care access MORE (R-Okla.) was the culprit behind the filibuster and that he was opposing the $6.9 billion bill on the grounds that it costs too much and is not offset with spending cuts in other parts of the budget.

“That senator says he doesn’t want a vote [on an amendment],” said Reid, without naming Coburn. “He wants to hold the bill up.”

Reid explained that the Senate on Tuesday had received a package from the House to extend funding for the highway system and the FAA but that under Senate rules the upper chamber cannot take up the bill until it clears a bill to fund FEMA, which is currently pending.

Reid said the FAA part of the package received from the House expires on Friday, and if it is not renewed would immediately leave 80,000 employees out of work on Saturday.

“I am in a situation where I can’t get to this bill until Friday when it expires,” said Reid.