The Bush-Republican record is so bad that most of the top bureaucrats have resigned and Bush has replaced them with lobbyist for the polluters. 

On February 18, 2004, 62 preeminent scientists including 19 Nobel laureates, 20 National Medal of Science recipients, former senior advisers to administrations of both parties, numerous members of the National Academy of Sciences, and other well-known researchers released a statement titled Restoring Scientific Integrity in Policy Making.  They charge the Bush administration with widespread and unprecedented "manipulation of the process through which science enters into its decisions."