Donald J. Trump and his allies have begun investigations to support their claims that Joseph R. Biden Jr. was incapacitated and his staff conspired to take presidential actions in his name.

Joe Biden said every pardon and commutation he issued was his decision, calling Republican "liars" for alleging his aides illegally used an autopen.

Former President Joe Biden, speaking in an interview with The New York Times, said he authorized his staff to use an autopen — a machine reproducing signatures — for pardons and commutations