Another day, and no white smoke yet from Sen. John McCain’s Sedona, Ariz., residence. The search for a vice president continues as the Democratic clans gather in Denver. In an interview with CBS’s Katie Couric, McCain offered no new information about his vice presidential thinking. But he did have some kind words for Sen. Barack Obama’s newly announced running mate, Delaware Sen. Joseph R. Biden: “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 [Obama’s] made a very wise selection.” Just because McCain’s...