Democrats are not going to try and stop AI or rein in AI. There is too much money at stake. They'll pass some regulations, sure, some data center rollouts might be blocked or modified, but they aren't going to stop the train.
Happily I think the power market in the US will do most of the regulating for the industry. AI is not bringing costs down for most people at the moment, or perceived to be helping people in a big way. Until there is an understanding of how it will work within society or a bit of trust built up with an industry that has mostly said "shut up and take it" I think it's reasonable to expect some conversation without jumping to "these folks are all populist stupid politicians". (In my opinion, populist, stupid politicians could be used to describe both parties so what is really changing?)
On the other hand a number of governors have changed (Texas in particular just went to a Democrat, and there are SpaceX interests there). They by definition can't prosecute on a federal level but they do hold some enforcement power.
There's zero chance AI datacentres are going away, they are unfortunately a national security necessity now.
It's the "if we don't they will" thing again.
I’m convinced the best thing that happened in the nuclear arms race is the beginning of a dialogue that resulted in the start and salt treaties.
Ai obviously needs something similar.
They won't stop it because China won't stop. Politicians have to avoid any appearance of xenophobia though (and to be certain many are personally not xenophobic, just saying optics matter to them), so they talk about jobs and wealth inequality as euphemism for ground truth; we aren't secure putting all our eggs in the China basket.
Arguably screwed up there already letting chips and robotics flow offshore while we focused on increasingly useless education in developer syntax and semantics.
They will cool the AI investment well aware technology improves and we probably don't really need all our investment eggs in that one basket then
Even tepid regulation will destroy the "our TIA is the entire observable universe due to the potential of self replicating AI probes so we totally deserve 10 trillion dollars in investor capital" trade