Presidential transition of Barack Obama time of their election, President-elect Obama and Vice President-elect Joseph Biden were incumbent U.S. Senators from Illinois and Delaware respectively. In accordance with Article I, Section 6 of the United States Constitution, both were required to resign their respective Senate seats on or before January 20, 2009, in order to become President and Vice President. Obama resigned from the Senate effective November 16, 2008. Initially, it was thought that his replacement would be named by Illinois Governor Rod Blagojevich. Since the term for the seat expired in January 2011, it would come up for its normal election in 2010 with
Barack Obama citizenship conspiracy theories January 8, 2009, and sworn in as President on January 20, litigation continued into his presidency. Numerous individuals and groups filed state or federal lawsuits seeking to have Obama disqualified from standing or being confirmed for the Presidency, or to compel him to release additional documentation relating to his citizenship. By mid-December 2008, at least 17 lawsuits had been filed challenging Obama's eligibility in states including North Carolina, Ohio, Pennsylvania, Hawaii, Connecticut, New Jersey, Texas and Washington. No such suit resulted in the grant of any relief to the plaintiffs by any court; all of the cases were rejected in