Although it cannot be fully confirmed, people were quick to accuse the president of making this edit to the map himself using nothing but a simple Sharpie pen, which seems like a lot of effort to go to just to try and prove a tweet wasn't wrong.
Within minutes of Trump presenting his drawing skills to the world, he found himself being ridiculed via the hashtag #sharpiegate, with people using their own Sharpie's to correct other things that Trump hasn't got entirely right during his presidency.
OMG! The White House released a new photo of President Trump golfing. #sharpiegate #sharpie https://t.co/BZz1lUUUqL