My understanding is that Real ID isn't considered proof that someone is legally in the US, because in some cases a non citizen can get one while they're here le

My understanding is that Real ID isn't considered proof that someone is legally in the US, because in some cases a non citizen can get one while they're here legally and then overstay their welcome. And that's also ignoring the whole "papers please" of how allegedly Americans aren't required to carry ID if they're just walking around