"When I ran for my first term, I said I was going to be a transition president ... What happened was we were having so much success in getting things done, and people thought we couldn't get done, I found myself having used more time than I would have ordinarily to pass that torch," Biden said.
He added, "But working with Kamala, she is tough, she's honorable. And the thing I like about her, and one thing we share in common, is that we have an optimistic view of the future."
This is Biden's first interview since the Democratic National Convention and the Sept. 10 ABC News presidential debate between Vice President Kamala Harris and former president Donald Trump.
This is a developing story. Please check back for updates.