President Trump directed administration officials to investigate former President Biden's use of autopen to sign documents in a Wednesday evening order that raised doubts about his predecessor's mental state.

The big picture: The probe into "whether certain individuals conspired to deceive the public about Biden's mental state and unconstitutionally exercise the authorities and responsibilities of the President" comes as House Republicans threaten to subpoena Biden aides over the former president's mental fitness. • Biden has faced fresh scrutiny over his health this year after his cancer diagnosis and the release of the biography "Original Sin," by Alex Thompson and Jake Tapper. • Trump and other Republicans have long questioned Biden's fitness to serve and the president shared a bas

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