Several amendments are still pending to that bill, although the Senate seems likely to at least vote on one, from Sen. Jim DeMint (R-S.C.), at some point. That amendment, which would repeal certain loans to the International Monetary Fund, would need 60 votes to pass.

Late Monday, the Senate approved H.R. 2279, the Airport and Airway Trust Fund extension, by unanimous consent. This bill extends airport and airway taxes that help fund the Federal Aviation Administration until July 22.

A longer-term FAA extension bill remains stuck in a House-Senate conference, as Republicans are looking to cut spending and have insisted on language that would make it harder to form air and rail unions.

With Senate passage, President Obama is expected to sign H.R. 2279 sometime this week, as current airport and airway taxes expire June 30.