That's exactly what they are supposed to do. In fact, they do have maps, one for each frequency, and they (FCC) apportion that stuff out. There are big circles and everything. There is a map office, and they issue maps. I've seen them. And the FCC is within the Commerce Department where they belong.
They report to some commerce higher who gets to decide whether 2 kids and rock music on a micro-power pirate station are more important than a freight war between American and Mexican truckers on America's highways. Then he'll focus his attention accordingly.
Let's get something straight. We're not talking about 2 kids and rock music. This is a group of people acting like this is a real radio station. They are collecting revenue, they are taking spectrum. There is at least one station being stomped on (radio term for hogging the same frequency).
SWAT teams are apparently all the rage with government agencies. Should the FCC have a SWAT team?