Vice President-elect Joe BidenJoe BidenBiden leads Trump by 36 points nationally among Latinos: poll GOP set to release controversial Biden report Can Donald Trump maintain new momentum until this November? MORE acknowledged Tuesday that the incoming administration erred in not informing former Intelligence Committee Chairman Dianne FeinsteinDianne Emiel FeinsteinNames to watch as Trump picks Ginsburg replacement on Supreme Court McConnell says Trump nominee to replace Ginsburg will get Senate vote Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE (D-Calif.) of Leon Panetta's selection to head the CIA.

However, Biden said Panetta is qualified and that the agency needs new blood.

"I'm still a Senate man, I always think this way, and it's always a good idea to talk to the requisite members of Congress," Biden said. "It was just a mistake."

Biden was in the Senate for Tuesday's swearing-in ceremonies.

-J. Taylor Rushing