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On January 3, 2025, the second session of the 118th United States Congress will officially come to a close, marking the end of this legislative period. In the time leading up to January, Congress may finalize pending bills, address budget appropriations, and attempt to pass key policies before the transition of power to newly elected Congress members. Negotiations and compromises on last-minute “omnibus” bundle bills and other unresolved pieces of legislation are common. With 18,455 bills and resolutions currently before Congress, and only about 7% passing and becoming law¹, this session marks an important shift in both legislative priorities and political dynamics.
The term “session” describes the series of meetings held by the House of Representatives and the Senate each year. With elections every two years, each Congress serves for two legislative sessions. Because of the 20th Amendment, Congressional sessions have started and ended at noon on the January 3rd of odd numbered years since 1935². Before this amendment, sessions began with inaugurations in March and ended with elections in November. This created a four month “lame duck” period where members of Congress serving out the rest of their term were limited in their ability to hold meetings and carry out major changes during their last days in office. This shift in the timing of Congressional sessions provides a framework for understanding how the legislative calendar unfolds, from the introduction of bills to the final adjournment.
The legislative timeline consists of bill introductions, committee hearings, debates, votes, and more, but it typically concludes with a sine die adjournment. “Sine die”—“without a day” in Latin—signifies an end to a session without a specified date to reconvene, meaning Congress will not meet again until the next session. The exact timing of adjournment depends on various factors including legislative deadlines and elections, so instead, a target adjournment date—December 20th for this session³—is set before the holidays.
Ending a session plays a crucial role in legislative strategy, as any bills that are not passed into law by the end of the session will “die” and must be reintroduced in a future session. This puts lawmakers under pressure to pass—or block—critical measures before the session ends. Issues such as budget, defense, and healthcare are frequently brought up in last-minute policy proposals, and multiple bills may be repackaged into a single one to be voted on. The end of session may even include Senate confirmations of federal positions and judicial appointments.
This waiting period before the new year puts Congress under a magnified lens of public scrutiny. People evaluate the “productivity” of a Congressional session by how many significant bills it passes. This adds more pressure for parties to push initiatives in the final months, and especially during a Presidential Election year since both major parties pivot priorities to fulfill campaign promises.
The legacy of the 118th Congress will depend on how it prioritizes different issues and navigates the political landscape. Recognizing the importance of this phase of the legislative process is the first step in understanding the nuance and impact of the Congressional session.
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