Rep. Joe Sestak, a retired U.S. Navy rear admiral who is challenging Sen. Arlen Specter in Pennsylvania’sDemocratic primary, provided a shocking revelation during a radio interview last week. Sestak said an unnamed official in the Obama White House, desperate to keep a Democratic majority in the U.S.Senate, offered him a plum federal appointment if he would drop his bid against Specter. When the host of the program asked Sestak if the job in question was secretary of the Navy, Sestak declined to answer. Put another way, somebody who represents President Obama offered Sestak a bribe.