Conservative commentators and Congressional Republicans said he had been muzzled because he did not toe the liberal line.
But the newly obtained documents show that Dr. Carlin’s highly skeptical views on global warming,...have been repeatedly challenged by scientists inside and outside the E.P.A.; that he holds a doctorate in economics, not in atmospheric science or climatology; that he has never been assigned to work on climate change; and that his comments on the endangerment finding were a product of rushed and at times shoddy scholarship.
Dr. Carlin remains on the job [at the EPA] and free to talk to the news media.