I'm well aware of the weird censorship. Mexico radio gives me Soviet vibes. They play the national anthem twice a day, they broadcast political party propaganda ads and call them PSAs, and then they play the National Hour show on EVERY SINGLE MEXICAN STATION every Sunday evening.I don't like corridos alterados, at least in Mexico, it is highly regulated and the radio cannot transmit that content. Therefore, a difference is clearly seen between a "Mexican regional" station in the US versus a "Grupera" in any city in Mexico.
Having said that, XHRR-FM is a border station that serves the Rio Grande Valley with a Regional Mexican format. I'm pretty sure I've heard them blast some of these corridos across South Texas. I'm guessing no one cares to report them since they target American listeners.