Dear Google and Apple, why the fuck are you changing the name of the Gulf of Mexico as fuckwad POTUS suggested?! It's an executive order and is only mandated for federal agencies. (From what I read. Besides, you shouldn't do it anyway if you had any dignity and respect.)
@dennisl
It was a stupid thing for Trump to do but map companies are merely consistently following their usual policies. "Official" names of places are decided by governments and map makers use those names within those governments' territories; if you're not in the U.S., the map should still show Gulf of Mexico.
Unless a law is passed, deciding what a place name should be, the Executive branch can name it.
Trump also changed Mt. Denali back to Mt. McKinley but it was only named Denali in 2015 by an Obama executive order.