Donald Trump accuses the former president's aides of covering up his "mental state" - a claim Biden says is "ridiculous".

President Trump is ordering an investigation into whether former President Joe Biden used an autopen to sign key documents ...

President Donald Trump’s executive order does not specify the parameters or legal justification for investigating President ...

US President Donald Trump on Wednesday ordered an investigation into what Republicans claim was a "conspiracy" to cover up ...

President Donald Trump on Wednesday ordered an investigation into former President Joe Biden's cognitive state, alleging that ...

President Trump ordered an investigation into Joe Biden’s actions as president, including his use of an autopen, alleging ...

President Trump has ordered his administration to investigate former President Biden's use of an autopen to sign pardons and ...

Trump ordered an investigation of his predecessor, Joe Biden, for alleged 'cognitive decline' and use of an autopen to sign ...

President Donald Trump on Wednesday ordered his administration to investigate former President Joe Biden’s use of an autopen ...

President Donald Trump on Wednesday directed his administration to investigate Joe Biden’s actions as president, alleging ...