This is from my NYT daily feed, so take it for what it's worth:
There are four areas in which a Republican Congress is most likely to make policy changes. For three of them, the party seems mostly united, and legislation does not necessarily have to overcome a filibuster in the Senate. (Some budget bills can pass with a simple majority.) For the last — aid to Ukraine — enough Republicans oppose a bill to keep it from becoming law.1. Tax cuts: The signature legislation Trump signed in his first term was a 2017 law that cut taxes for almost all Americans, but especially the wealthy and corporations. Many of those cuts expire next year, and a Republican Congress is almost certain to extend most of them.
The biggest question is whether Congress will cut taxes even more, as Trump has said he favors (on tips, for example). That would make an already expensive tax bill even more costly — and lawmakers who are worried about the federal debt, including some Republicans, might oppose it.
2. Immigration: Nothing animated Trump on the campaign trail like immigration. He has promised mass deportations, which he could start by himself with executive action. But fully executing his plans will require money from Congress — for example, to hire border agents and build more of the wall.
Bigger changes to the immigration system would require bipartisan support to overcome a filibuster. Democrats have backed stricter entry rules before, but they might refuse to work with Trump on his signature issue. Some of Trump’s wealthy supporters have also pushed him to allow more legal immigration, but it’s unclear if Congress would agree.
3. Energy and climate: Congressional Republicans will probably reduce clean-energy funding, and Trump can unilaterally permit more oil and gas drilling and cut environmental regulations. Those moves will likely worsen climate change, but Republicans hope they will reduce energy costs.
There may also be opportunities for bipartisan legislating. Lawmakers from both parties want to streamline the permitting process, which could help oil, gas and clean energy projects move forward.
4. Ukraine: Trump and many congressional Republicans are skeptical about providing more aid for Ukraine’s defense against Russia. The aid approved earlier this year will probably run out sometime in 2025, at which point Ukraine’s struggles on the battlefield will grow.