We might expect that if the legislative intent was for the entirety of Baja California to use the U. S. rules, the legislation would have been written more simply.
That being said, it's certainly possible (or even probable) that de facto the entirety of Baja California uses U. S. rules, regardless of de jure.
Providentially, we're coming up on the days when a few international phone calls (or, if possible, monitoring radio or TV stations) can shed light on the matter.
But even if there are southern parts of Baja California that use Mexican rules, Santa_Isabel is almost surely the worng name.