The NARA has reportedly reached out to representatives of former presidents and vice presidents.
NARA wants them to check their records for classified information, according to a letter seen by CNN.
Reps for Obama, George W. Bush, and Clinton have told Insider they don't have classified documents.
The request comes after classified documents were found in recent months at the homes and offices of President Joe Biden, former President Donald Trump, and former Vice President Mike Pence.
Bush and Ronald Reagan, and former Vice Presidents Mike Pence, Biden, Dick Cheney, Al Gore and Dan Quayle, CNN reported.