Sheinbaum said that despite the fact that her government sent a letter to Google saying that the company was “wrong” and that “the entire Gulf of Mexico cannot be called the Gulf of America,” the company has insisted on maintaining the nomenclature.

Without comment from Microsoft, I'm not sure if Bing Maps showing "Gulf of Mexico" exclusively is a political statement or a reflection of how frequently the service's information gets updated. I have reached out to Microsoft about the Gulf of Mexico name debate and how Bing Maps is updated.