On Tuesday, July 9, 2019, the United States Court of Appeals for the Second Circuit held that President Donald J. Trump engaged in unconstitutional viewpoint discrimination, in violation of the First Amendment, by blocking certain users' access to his Twitter account based on those users' speech on Twitter. The Knight First Amendment Institute at Columbia University sued the President on behalf of seven Twitter users who were blocked from the President's Twitter account after said users tweeted replies to the President critical of his personality and policies. Judge Barrington D. Parker concluded "that the First Amendment does not permit a public official who utilizes a social media account for all manner of official purposes to exclude persons from an otherwise-open online dialogue because they expressed views with which the official disagrees."
