Donald Trump has issued a Presidential Memorandum directing his administration to probe whether former President Joe Biden was truly in charge of the United States, or if key White House aides were involved in a "conspiracy" to usurp executive power due to his perceived "cognitive decline".

President Donald Trump is directing his administration to investigate Joe Biden’s actions as president, alleging aides masked his predecessor’s “cognitive decline” and raising questions about his use of the autopen to sign pardons and other documents.