House Republicans have subpoenaed Anthony Bernal as part of their rapidly expanding investigation​ into former President Joe Biden's mental fitness​ while in office..

The Trump administration has denied executive privilege to the nine aides of former President Joe Biden slated to testify before the House Oversight Committee regarding the allegations that there was a cover-up of the former president’s “mental decline.

The White House counsel Tuesday said ex-Biden aide Neera Tanden is not shielded by executive privilege and thus must provide “unrestricted testimony” on former President Joe Biden’s mental acuity. The decision was issued before Tanden appeared before the GOP-led House Oversight Committee for closed-door testimony Tuesday to give insights for the panel’s investigation of Biden’s cognition and use of autopen.