Washington — U.S. Attorney General Eric Holder refused to answer pointed questions from Congressman Darrell Issa, R-Calif., about allegations the Obama Administration offered U.S. Rep. Joe Sestak, D-Pa., a high-ranking position in return for dropping out of the primary election against incumbent Sen. Arlen Specter. Mr. Issa wants the Justice Department to investigate the allegations which, if confirmed, could amount to three felony offenses for bribery and corruption. On Thursday, with Mr. Holder testifying before the House Judiciary Committee, Mr. Issa asked why a special prosecutor has not been assigned to investigate the case. “The appointment of a special prosecutor...