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 says his administration will continue to restrict The Associated Press' access to cover presidential events until the news agency goes along with his renaming of the Gulf of Mex

For the first time, President Trump himself said the Associated Press had to change its style on the gulf after the White House began not allowing the news organization to cover several of his events last week.

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.