Lawmakers left Washington on Thursday without a deal on an immigration enforcement overhaul, virtually guaranteeing a partial shutdown of the Homeland Security Department when current funding runs out this weekend.
Unless progress is made, neither chamber is expected to return to the Capitol next week, when Congress is scheduled to be in recess.
Bipartisan negotiations on an immigration plan were expected to continue over the recess. Leaders of both chambers told members they would be given 48 hours notice to return to the Capitol if a deal is reached.