Bot or not? Mystery over anonymous user retweeted by Trump

FILE - This June 27, 2019, file photo President Donald Trump's Twitter feed is photographed on an Apple iPad in New York. Trump's retweet of a post with the alleged name of the impeachment whistleblower shows how social media gives everyday Americans a direct line to the president, even if the identity of the tweeter is unknown. (AP Photo/J. David Ake, File)

CHICAGO — The Twitter user goes by Gigi, though sometimes Sophia, Emma or Leona. The occupation is listed at various times as teacher, historian, documentary writer and model. There’s been speculation about whether this person is really a woman — or even human. But bot or not, the account has gotten the attention of the president and his Twitter followers.