Alan Keyes and Reverend Wiley Drake (Keyes vice-presidential running mate in California) filed a lawsuit over Barack Obama's citizenship and eligibility to run for president. Basically, Keyes implies that Obama is not a native born U.S. citizen as required to be president. The lawsuit (Keyes v Bowen, Superior Court, Sacramento) can be found here: http://www.ballot-access.org/2008/WRIT-OF-MANDATE.pdf