McCain Calls Democratic Ticket “Formidable”

The presumptive GOP nominee tells CBS News' Katie Couric he thinks Obama picked a good man in choosing Biden for his No. 2.

"I think he's a good selection. Joe and I have been friends for many, many years, and we know each other very well, and so I think he's made a very wise selection."

Also downplays how Biden's foreign policy creds could help Obama.