Vice President Biden pitched Janet Napolitano on Friday as a future Supreme Court Justice

"My staff, when I said I was going to say it,they said, 'No, don't make news,' " Biden said at a ceremony marking the end of Napolitano's tenure as Homeland Security Secretary. Biden then said: "I think Janet should be on the Supreme Court of the United States."

Biden praised Napolitano's "intellectual capacity" and her depth of knowledge.

Napolitano has been in the running for the Supreme Court before and will likely be for future vacancies. Though she has never served as a judge, she was attorney general of Arizona before serving as governor.

Biden, of course, is likely to run to become the next president, and if he were to win that office, it's clear that Napolitano would be at the top of his list.

Napolitano is leaving her job to become president of the University of California.

It's not clear when the next vacancy will occur. Justice Ruth Bader Ginsburg, the court's oldest member at 80, recently suggested that she won't step down from the court any time soon.