President Trump's claim lacks legal basis as the Justice Department has previously stated that a president can use an autopen to sign legislation, and the Constitution grants broad clemency powers to the president.

There have been no instances where autopen signatures were successfully challenged in court. Presidents have used autopens for decades without legal controversy.

Trump's claims suggest that he may pursue investigations against the Jan. 6 committee members, despite the pardons. However, legally, the pardons remain valid unless revoked, which has never occurred in U.S. history.

Legal experts refute Trump's claims, emphasizing that the Constitution grants the president broad clemency powers and that autopen signatures are legally valid.