The FCC does possess, and has exercised in the past, these powers. The legal argument is that by using the public spectrum to transmit, you have agreed to FCC

The FCC does possess, and has exercised in the past, these powers. The legal argument is that by using the public spectrum to transmit, you have agreed to FCC enforcement of such. Thus, you have tacitly agreed that the FCC in fact does not need a warrant to investigate, or seize your equipment, if they determine that that is an appropriate action. I think this is beyond a flimsy argument, but it is the argument. It needs more looking over in courts, frankly. Seems like it could be easily abused.