Plausible deniability has always been a cornerstone for staying out of trouble when it comes to down and dirty backroom politics, but the circle may be tightening just a notch for the Obama administration.Last month Pennsylvania Democratic Rep. Joe Sestak revealed that he had been offered a job last summer within the Obama administration, possibly as Secretary of the Navy, as an inducement to drop his primary challenge against Senator Arlen Specter (D-Penn.). The stakes were raised this week, Politico reports, as Rep. Darrel Issa (R-Cal.), the ranking Republican on the House Oversight and Government Reform Committee, sent a letter to White House Counsel Robert Bauer:... if Sestak's allegation is true, administration officials may have violated a federal statute which makes it a crime for a government employee to use his authority "for the purpose of interfering with, or affecting, the nomination or the election of any candidate" for certain offices, including Senate...(Read Full Post)