The divided 118th Congress, which has so far been incapable of passing major legislation, faces a slew of deadlines in the first weeks of the new year.
The House adjourned for the holidays on Dec. 14, but senators will return next week in an effort to provide a $45 billion aid package to Ukraine by Christmas.
Frustrated Republicans met to form a plan for replacing their ousted speaker, a task complicated by internal divisions and an ongoing appropriations battle.