The Senate is working overnight into the early hours of Thursday morning as it weighs whether to claw back $9 billion in federal funds already congressionally approved for foreign aid and public broadcasting programs as a deadline to act on the White House priority looms.

For the third time this year, the Senate will undergo a marathon voting session known as a “vote-a-rama,” the last step in a dayslong process to rescind billions in foreign aid spending. Beginning Wednesday afternoon,