Yes, another agency is spying on the Minutemen, giving hourly reports to Mexican Illegal Command Central who can then give the coyotes real-time direction.
Oddly enough, even though the Minutemen are on the lookout, they've never spotted these mysterious agents.
If you want to believe something badly enough, you'll figure out a way to do it.
I have read reports and heard interviews about the ACLU shadowing the Minutemen watching for "civil rights violations". I'll do some checking and post links I find. This whole thing reeks of set-up.