On Tuesday, February 16, 2021, the Honorable Bennie G. Thompson, Member of the United States House of Representatives, filed a lawsuit, in his personal capacity, against Donald J. Trump and Rudy Giuliani, in their personal capacities, alleging a violation of the Ku Klux Klan Act, 42 U.S.C. § 1985(1). The lawsuit stems from Trump and Giuliani's roles in the January 6, 2021 Capitol riot. The complaint also names as defendants Proud Boys International, L.L.C. and Oath Keepers, two right-wing extremist groups associated with the riot.
On Thursday, January 7, the U.S. Supreme Court rejected a case by Republican Congressman Louie Gohmert asking it to prohibit Vice President Mike Pence from certifying the election results.
On Tuesday, October 15, 2019, the United States Court of Appeals for the Fourth Circuit ordered rehearing en banc in District of Columbia v. Donald J. Trump. The lawsuit, filed by the attorneys general of Maryland and the District of Columbia, alleges violations by President Donald J. Trump of the Foreign and Domestic Emoluments Clauses of the U.S. Constitution.
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."