Former President Joe Biden responds to Republican inquiries about his autopen usage, claiming he personally made all decisions on pardons, executive orders and legislation in the White House.

The move by the White House represents a significant escalation, as it is a directive to the Justice Department to formally investigate.

The Republican chair of the House Oversight Committee is demanding that former President Joe Biden's White House physician testify before the panel — ramping up a congressional investigation into Biden's age and health.