BLM'S Law Enforcement Authority
The Bureau of Land Management's law enforcement program draws its authority from federal law under federal jurisdiction. BLM law enforcement officers enforce federal laws and do not have authority to enforce state laws without written authorization from a sheriff, other authorized state official or state law. Many laws and regulations that BLM law enforcement officers enforce are similar to state and local laws, and many federal regualations prohibit the same acts as state laws. For example, crimes such as littering, illegal take of migratory waterfowl and exceeding the posted speed limit in a motor vehicle are all prohibited by both federal and state laws.
The Federal Land Policy and Management Act specifically gives BLM law enforcement officers traditional police powers such as enforcing federal laws, carrying firearms, serving search warrants, making arrests with or without a warrant and conducting searches of places or people with or without a warrant in accordance with applicable laws and seizing evidence.