Ky., has been leading the probe into Joe Biden’s cognitive state during his presidency, with Republicans alleging that Biden's occasional use of an “autopen” to sign documents — a practice other presidents have done as well — demonstrated that he wasn’t fully in control or aware of what his administration was doing.

The Trump White House has launched an investigation into former President Joe Biden and his top aides’ use of an autopen during Biden’s final months in office. The new investigation, which will be carried out in conjunction with the Justice Department,