Jerome Robert Corsi (born August 31, 1946) is an American author and conservative activist. He is best-known for his two New York Times bestselling books: The Obama Nation and Unfit for Command (with co-author John O'Neill). Both books, the former written in 2008 and the latter in 2004, attack Democratic presidential candidates and have received much criticism, including allegations of serious factual errors. His other books, as well as columns he has written for conservative websites such as WorldNetDaily and Human Events, have discussed topics such as the alleged plans for a North American Government, criticism of the United States government for allegedly covering up information about the terrorist attacks of September 11, 2001, criticism of the scientific consensus on the biotic nature of petroleum, and alleged United States support of Iran in its attempts to develop nuclear weapons.