The FCC has authority to enter premises and what have you to resolve issues. The HAMs are empowered by their ability to see find transmitters, and call the tip line.
https://www.fcc.gov/reports-research/guides/inspection-fact-...
I'd be very interested in seeing anyone that can provide an real world example of FCC staff on their own, not tagging along with other law enforcement agencies entering onto private residential properties (like a house) to conduct their own search. I work professionally in two way radio systems and have never heard of this happening. The FCC does not execute its own search warrants.