Christopher C. Horner is an attorney in Washington, D.C. and a Senior Fellow at the Competitive Enterprise Institute who opposes the mainstream view of climate change and has been prominent in promoting climate change denial. He is the author of three books disputing the scientific evidence for man-made global warming. Horner had a financial relationship with coal companies who provided him with funds. Horner has been criticized for hounding climate scientists with frivolous requests for documentation and emails.