Washington | President Donald Trump wrote on social media that he no longer considered valid the pardons his predecessor granted because they were signed using an autopen – a typically uncontroversial method of affixing a presidential signature.

Trump, who specifically took aim at the pardons granted to members of a House committee that investigated the January 6, 2021 attack on the Capitol, offered no evidence for his claim, and there is no power in the Constitution or case law to undo a pardon.