John Kerry on 2016 presidential bid: "Nobody ever says never"

Secretary of State John Kerry was asked Sunday whether there's any possibility he might run for president in 2016, and he said there's "no scenario whatsoever" in which he's envisioned himself doing that.

"I haven't thought about it," he said on NBC's "Meet the Press." "As you can tell, I'm pretty busy."

But even as he denied any interest, Kerry left himself a bit of flexibility.

"Nobody ever says never," he said.

Kerry, a longtime senator from Massachusetts before he was tapped to head the State Department, was the Democrats' 2004 presidential nominee. He narrowly lost to then-President George W. Bush.

Polling currently indicates Kerry's predecessor as secretary of state, Hillary Rodham Clinton, would be the odds-on favorite to win the Democratic nomination if she decides to run for president. Clinton has not formally declared a bid, but all indications point to her running.