The U.S. Supreme Court will decide Friday whether to take up a case over president-elect Barack Obama’s citizenship — one of a few around the country seeking to nullify his election, but this one has an interesting lineage. It was referred to the high court by Justice Clarence Thomas, the court’s only African-American justice. Maybe Thomas is just returning the favor — putting through a case that questions whether Obama should be president, after Obama said he wouldn't have picked Thomas for the high court. The suit filed against New Jersey Secretary of State Nina Mitchell Wells contests Obama’s claims to citizenship and therefore to the presidency and initially sought to stay the election. Alan Keyes, who was defeated by Obama in a race for the U.S. Senate in 2004, has filed a similar suit. During the campaign, a copy of Obama’s birth certificate was posted on his website, showing that he was born in Hawaii. A petition to stop the Electoral College from confirming Obama as the next president has been rejected by Justice David Souter. Legal experts say the case has little chance of going anywhere. www.politico.com