Why it matters: Trump has targeted the AP, which has said it will continue to use the 400-year-old Gulf of Mexico instead of Trump's preferred Gulf of America, as part of longstanding Republican complaints about the AP Stylebook's language guides around race, gender, and immigration.

President Donald Trump made his first reference on Monday to his White House war with the Associated Press—only to vow to maintain its indefinite ban of the news outlet. Trump called the wire service “obsolete” and said he would keep it barred from press engagements until it calls the Gulf of Mexico the “Gulf of America.

But the Associated Press just refuses to go with what the law is and what is taking place. It's called the Gulf of America now. It's not called the Gulf of Mexico any longer. I have the right to do it,