Piltz worked under the Clinton and Bush administrations. Each year, he helped write a report to Congress called "Our Changing Planet."

Piltz says he is responsible for editing the report and sending a review draft to the White House.

Asked what happens, Piltz says: "It comes back with a large number of edits, handwritten on the hard copy by the chief-of-staff of the Council on Environmental Quality."

Asked who the chief of staff is, Piltz says, "Phil Cooney."

Piltz says Cooney is not a scientist. "He's a lawyer. He was a lobbyist for the American Petroleum Institute, before going into the White House," he says.

Cooney, the former oil industry lobbyist, became chief-of-staff at the White House Council on Environmental Quality. Piltz says Cooney edited climate reports in his own hand. In one report, a line that said earth is undergoing rapid change becomes “may be undergoing change.” “Uncertainty” becomes “significant remaining uncertainty.” One line that says energy production contributes to warming was just crossed out.