That way anyone and everyone should be expected to have an ID and depriving someone of that ID or their use of real ID could be made a crime similar to unlawful detainment.
The system is interesting that the 2 branches of government responsible for doing things are often in a state of open conflict and the main job requirement of the judiciary seems to be an ability to maliciously misinterpret the law in a way which most benefits the group who appointed them.
Well, it’s a big country that is really kind of like 50 different smaller countries that do a lot of important things in a common manner but also do a lot of other things in very different ways. It’s hard to get all 50 states to move in the same direction.
Like this doesn’t actually matter, at all, for security purposes. Which is why nobody’s cared enough to make it go faster.
For this specific regulation, it's illegal to prevent someone who passes physical security screening and has paid their fare from boarding a plane.
So, if FedGov didn't provide a mechanism that they could point to that technically doesn't require passengers to present ID to board domestic fights, then they're still technically compliant with the law.
That's why TSA hasn't been able to just say "Fuck you, you don't get to fly if you don't have a federally-issued internal passport.".
Cite? Not that I'm doubting, just never heard this mentioned during the last news cycle around REAL ID when it "went in to effect" months ago. I didn't really look in to it any further as I've had a compliant ID for long enough it expires next year plus a passport so it didn't affect me.
There's a bunch of case law about freedom of movement, which is pretty radically protected in the United States. Not only can the federal government not put up unreasonable impediments to interstate travel, individual states and even private companies can't, either. Since American's aren't required to have ID (interestingly, this might be more political than legal, I can't find any case law enshrining the right to not have ID, just a lot of public outcry and backpedaling any time it's suggested), requiring one to travel interstate would be a significant impediment.
Of course, they didn't really care about it because it's mostly just security theater and thus the fed was never going to start turning people away simply for not having a compliant ID (which is still true). If there were much more valid reasons for why everybody needs to have a Real ID then states would have put more effort into getting everybody to have one.
There's also the separate the issue that the Real ID rules are questionable and it's not always easy for someone to get a Real ID even if they want one.
There's a manual verification process that has always existed for people who lost their ID before their flight, it used to be free, now you need to do that and pay $45 for it.