Kerry tells Snowden to 'man up'
Kerry was asked about Snowden in a nationally broadcast interview in the wake of Snowden's interview earlier with NBC News.
In that session, Snowden said he never intended to end up Russia, but was forced to go there because Washington decided to "revoke my passport".
Asked about this on the NBC Today show, Kerry replied: "Well, for a supposedly smart guy, that's a pretty dumb answer."
Kerry said: "If Mr Snowden wants to come back to the United States, we'll have him on a flight today."
He said Snowden should "stand up in the United States and make his case to the American people".