"While hardly akin to the secret trip to China that Henry Kissinger made when he was President Nixon's national security adviser, the climate meeting — which included White House science adviser John Holdren and former Undersecretary of State Frank Loy — was not heavily advertised, and the group did not issue any statements when it returned. Together, the group members consented to the "Chatham House Rule," under which they agreed they could repeat generally what was discussed, but not identify who said what."
