McCain to Kerry: "Thank you very much, Mr. Secretary"

Sen. John Kerry, the next secretary of state?

Republican Sen. John McCain had some fun Monday at the expense of his friend and Democratic colleague. Responding to a Kerry introduction at a news conference on a disabilities treaty, McCain said, “thank you very much, Mr. Secretary.”

It was a clear reference to the recent talk that Kerry is a top candidate to replace Secretary of State Hillary Rodham Clinton.