Lawmakers are primed to step up their efforts to overhaul the regulation of Fannie Mae, Freddie Mac and the Federal Home Loan Banks next year. That’s the view of key congressional aides who are actively involved with the committees working on GSE regulatory reform legislation. “The first priority of Senator Shelby and the Senate Banking Committee next year will be the regulation of Fannie Mae, Freddie Mac and the Federal Home Loan Banks,” said Mark…