All LEOs are subject to the restrictions of the 4th Amendment. But GWs have statutory and court-backed “inspection authority” that applies to receptacles where meat may be kept, open air sheds, etc. That coupled with their broad authority to enter any area where hunting and fishing activities may be taking place gives them lots of leeway.

It’s not blanket authority to do anything they want though. They cannot just go through homes or other places with a reasonable expectation of privacy without consent or a warrant.