President Donald Trump has launched a sweeping effort to look into whether White House aides unlawfully governed on behalf of former President Joe Biden — scrutinizing the use of mechanical signatures, questions about Biden’s mental fitness, and how the executive branch functioned without an active commander in chief.

In a White House memorandum on Wednesday, Trump authorized two formal inquiries: one targeting alleged efforts to “deceive the public about Biden’s mental state,” and another examining the use of an autopen to sign executive actions, including pardons and policy directives.