Democrats and Republicans have reached an agreement in principle over border security to fund the US government and avert another partial shutdown.
Lawmakers said the deal had been struck in a closed-door meeting in Washington.
No details have released, and it is unclear whether President Donald Trump will back the agreement. He is due to address a political rally in Texas.
Talks had previously stalled on the detention of undocumented immigrants and funding for Mr Trump’s border wall.
A deal must be reached by Friday when funding will run out for some agencies.
The previous shutdown lasted 35 days and was the longest in US history.