Although Luntz later tried to distance himself from the Bush administration policy, it was his idea that administration communications reframe "global warming" as "climate change" since "climate change" was thought to sound less severe. Luntz has since said that he is not responsible for what the Bush administration did after that time. Though he now believes humans have contributed to global warming, he maintains that the science was in fact incomplete, and his recommendation sound, at the time he made it.