Unfortunate for the spotters: they've been wrong about who they're seeing in the field. In this area, all of the Feds that have been seen have been DEA and HSI after suspects who are US citizens, not ICE enforcing immigration law. The spotters are historically not good at distinguishing Feds from each other, which makes the utility of this app a little questionable (unless you're just trying to avoid all police).
My guess, and it's just a guess, is that the ordered scale-back on ICE agricultural worker immigration enforcement took place before they got to this county. That said, I don't know why they haven't been here, just that they haven't.
Sounds a lot like a problem the current administration created. Blowback is a real phenomenon. Americans are having trouble distinguishing which teams of masked men with guns roaming our streets and courthouses are "the good guys".
My guess, and it's just a guess, is that the ordered scale-back on ICE agricultural worker immigration enforcement took place before they got to this county. That said, I don't know why they haven't been here, just that they haven't.