Key takeaways
- Democrats flipped both chambers of Congress on 3 November but hold no formal power until the new Congress is sworn in on 3 January.
- Congress's later tools on Iran are indirect, running through funding riders, NDAA conditions, hearings and confirmations rather than a binding war powers ban.
- The 11 December funding deadline falls before the new House is seated, so Democratic leverage in the lame duck is limited.
Democrats won control of both chambers of the US Congress on Tuesday 3 November. Results were confirmed overnight into Wednesday 4 November. ABC News projected that the party had won control of the House, where a majority requires 218 seats. CNN and the Associated Press (AP) reported that Democrats flipped seven Republican-held Senate seats: Iowa, Kansas, Maine, North Carolina, Ohio, South Carolina and Texas. Republicans had held a 53-47 majority going in, according to NPR. Republicans keep control of both chambers until the new Congress is sworn in on 3 January.
President Donald Trump told Fox News on Tuesday night: "I don't view it as a hit on me." The decisions that matter most in US foreign policy over the next two months, on Iran, Ukraine and Venezuela, fall in a window in which Democrats hold no gavels. The question is how a domestic rebuke reaches external policy. The answer depends on who holds which lever, and when. In our reading, the result works mainly through political cost and the funding calendar. It does not work through binding prohibition, at least until the new Congress is seated.