When President Barack Obama nominated John P. Holdren to be director of the Office of Science and Technology Policy (OSTP), conservatives launched a major attack against him, claiming that Holdren had once advocated forced abortions. The source of this accusation was a chapter in a 1977 book he co-authored with Paul and Anne Ehrlich. In fact, although the subject of forced abortions is discussed in the text, Holdren never advocated them. They then claimed that he was a climate change alarmist. In the end, Holdren was unanimously confirmed by the Senate on March 20, 2009. He also serves as the Assistant to the President for Science and Technology and co-chair of the President’s Council of Advisors on Science and Technology (PCAST).