In Wyoming they are legal to anyone and I think that is ok, however I hunt as well as most of my family with a compound or longbow, recurve every now and then. My father however has had shoulder surgery, back surgery and the crossbow is his only option. If others who are able to hunt with a bow but choose a crossbow that is ok with me as well. You still must get much closer than a rifle and practice and know your effective range with the weapon.
In Nebraska it was only allowed with a dissability permit.