I'm jumping on late to this thread, so I'll just post as if I've not read any of the other responses (which I haven't
).
I believe the NGR takes a similar stance to magic as they do psionics and for the most part d-bees. That is, "We don't really like you, but as long as you are not causing trouble we'll agree to disagree."
When Kevin writes about the "Great Campaign" taken on by the NGR about a hundred years before the current time, he throws magic users into the same group as the other supernatural beings that were slaughtered. So, while sentiments may have laxed over the next hundred years, its pretty clear how they were originaly viewed by the population and more importantly by the military. At the same time all the Magic and Psychic classes are listed as existing within the NGR citizenry.
I remember there being a blurb in the NGR book about Undead Slayers being fairly commen within the areas covered in the book. The blurb also mentioned that 90% of those Slayers are not associated with the NGR. I always wondered if that was supposed to imply that the other 10%
are in fact associated with the NGR, but as is typical its pretty unclear.
There are no Psi-Stalkers in the NGR military, but I seem to recall that some of the more civilized psi-stalkers will team up with NGR patrol groups to aid in the search for supernatural monsters.
The Rifts main book claims that 25% of all humans has some kind of psionic ability. The NGR appears to only require D-bees to register. So, unless they consider 1/4 of humans to be d-bess (which even the CS does not do), they must not require psychics to register. And I would guess that means that about 25% of their military is at least a minor psychic? Its unclear, but as written I could see that being the case.