On March 24 Treasury Secretary Geithner categorically renounced entertaining the thought of giving up the dollar as reserve currency for a global currency as proposed by China. Make your way to 2:25 in this exchange.
One day later Politico reports that he thought the idea deservered consideration. He was subsequently given a chance by a moderator to reconsider his answer. Which is it? Did he momentarily get off message? Time will tell.