EDIT: I'm getting downvoted, but I really am curious. It's extremely uncommon for government bureaucracy to roll back regulations, and as far as I can tell from some Googling, the FAA has not done so. So what regulations are being weakened?
Edit: Replying to the edit - oh come on HN dont downvote their question it's a reasonable question, my original response didn't link any articles.
The regulation doesn't specifically have to get rolled back. In this case a large part of weakening regulations is shifting to allowing the manufacturer (Boeing) to regulate themselves and allowing (or forcing) ties between regulator and manufacturer to get too close.
https://www.nytimes.com/2019/03/26/us/politics/boeing-faa.ht...
It also seems like the ATC system is stretched thin, as well as the airlines themselves in terms of pilots. Though I may be biased since I'm much more aware of ATC problems given the various YouTube channels I watch covering aviation.
That's because Google has become useless, not because the info isn't there.
You should try and find some of the analysis articles close to the MCAS disaster that explain how it's not the FAA that certifies airplanes any more, but the manufacturer basically self certifies.
[Yes, they're FAA employees but paid by Boeing. Do you also believe in Santa Claus?]