Fannie Mae, Freddie Mac, and the National Association of Realtors last week denied they were teaming up with homebuilders to form a joint lobby group that would push their housing industry agenda on Capitol Hill. According to a published report, Freddie Mac Chairman Leland Brendsel and top officials of the NAR and the National Association of Homebuilders met late last month with Fannie Mae Chairman Frank Raines at Fannie’s headquarters in Washington, DC,