Congress is almost completely red. So of course they are going to do whatever Trump wants them to do and pump whatever laws and regulations (or lack thereof) that he wants in place. Includes replacing SEC head if they find some ancient provision that lets them get away with it.
Yes, Congress can change the law I suppose--and Trump could simply ignore the law, although I suspect this isn't a hill he's going to want to die on right now.
The US Congress is nearly 50/50, with the Senate now having a slight majority for Republicans. The House still might be majority Democrat when all of the votes are counted in the coming weeks.
Trump winning the election is a win for the crypto market because this is going to influence the crypto market more than what we are seeing now. The price of Bitcoin has been mowing bullishly quicky and now the price is at $80k plus looking the price to hit $100K within some days or weeks. Since the Republican has more than 50% of the c, then there is probability that it will ease things for Trump making it easy for Trump to pass bills that will favour the whole American people. This is just like the beginning of things and soon we might have to see the price of Bitcoin exceeding 100K maybe before or after Trump inauguration.