That's 'cause they can't, and never could, although they sure tricked a lot of people into thinking so. The Constitution says otherwise.
Hmm.. US Supreme Court doesn't say that as far as I can tell.
http://www.sportsmenvote.com/news/u-s-supreme-court-move-backs-game-warden-power/The claim of an unconstitutional search by a San Diego fisherman who got caught with an out-of-season lobster was rebuffed Monday by the U. S. Supreme Court.
In denying review, the high court let stand a California Supreme Court opinion in June that people who hunt and fish have fewer of the privacy rights guaranteed by the U. S. Constitution�s Fourth Amendment.
The state high court granted game wardens the authority to stop, question and search citizens without a warrant or even without probable cause to believe a law has been broken.
All the warden needs, the California court ruled, is knowledge that a person is or has been fishing or hunting.
The need to protect wildlife for future generations outweighs the comparatively minor intrusion on a citizen�s Fourth Amendment protection against unreasonable search and seizure, wrote state Supreme Court Chief Justice Tani Cantil-Sakauye.
The opinion overturned rulings by two lower courts.
If the Supreme Court won't shoot it down, then you're on shaky ground. It's going to go state by state.
If somebody has other case law from the Supreme Court, I'd love to see it.