The White House blocked an Associated Press reporter from an event in the Oval Office on Tuesday after demanding the news agency alter its style on the Gulf of Mexico, which President Donald Trump has ordered renamed the Gulf of America.The reporter tried to enter the White House event as usual Tuesday afternoon and was turned away, AP executives said. The highly unusual ban, which Trump administration officials had threatened earlier Tuesday unless the AP changed the style on the Gulf, could have constitutional free-speech implications.Julie Pace, senior vice president and executive editor of The Associated Press, called the administration’s...