Some of the most influential people in city government most notably Raymond Kelly, the police commissioner work out of private offices at agency headquarters separate from City Hall.

WSJ: Murky Future For 'Bullpen'

Most of the accounts for 2009 were signed off at the plenary session in May this year, with the exception of the European Police College (CEPOL), the European Medicines Agency (EMA) and, most notably, the Council of Ministers.

BBC: MEPs refuse to sign-off Council budget

Most notably, the White House cited privilege in 1993 to prevent Justice Department and Park Police officials from reviewing documents in Vincent Foster's office in the days after his tragic death.

CNN: Transcript: Judiciary Committee impeachment hearing