States are responsible for managing fish and game in that state unless the species is federally listed under the Endangered Spieces Act.
Since the states manage those species they dictate the price, season, cost etc for fish and game irregardless if its on federal, state or private lands.
Since you like the topic here is one thats even better. In WY, you are required to hire a guide as a non-resident if you want to hunt in a wilderness area.
Basically it means you have to pay a ton of dough to hunt the good stuff. They claim its because people get lost, but I don;t buy it. Tens of thousands of people hunt, hike, camp in wilderness areas in other states and they seem to get by just fine without a guide. Basically the guide lobby in WY got the law passed so you and I have to hire them to hunt the good stuff versus doing it on our own.