Fannie Mae, Freddie Mac and their political supporters outspent all others when it came to influencing members of the 108th Congress through media advertising – a move credited with thwarting efforts to pass GSE reform legislation over the past two years, according to a recent academic study. The report was released this month by the Annenberg Public Policy Center at the University of Pennsylvania. According to the Center, the GSEs and their supporters paid $96.0…