Sen. Ron Johnson is demanding the National Archives turn over records about former President Joe Biden’s “mental and physical health and cognitive decline," Fox News Digital learned.

The House Oversight Committee will bring in four more ex-White House aides for questioning about the alleged cover-up of former President Joe Biden’s mental decline — including the 46th president’s last chief of staff,

Former President Joe Biden's White House physician declined to answer questions before a House Committee as the GOP-led panel ramped up its investigation into Biden's age and health.

Rep. Ronny Jackson, a former White House physician, spoke with Fox News Digital after ex-Biden doctor Kevin O'Connor's appearance before the House Oversight Committee.

House Oversight Committee Chairman James Comer (R-KY) issued a subpoena Tuesday to former White House deputy chief of staff Annie Tomasini as part of an escalating investigation into former President Joe Biden’s mental fitness and final clemency decisions while in office.

Republicans in the House Oversight Committee are mocking Ryan Nobles, the NBC News journalist who published an article showing that Rep. James Comer, the lawmaker investigating the use of an "autopen" by the Biden administration,

The House Oversight Committee is investigating allegations that former President Joe Biden's senior aides covered up his mental and physical decline, including his physician.