Lawmakers may not be able to reach a consensus on GSE portfolio caps or an affordable-housing fund, but they should grant a regulator receivership powers over Fannie Mae and Freddie Mac – a recent research paper claims – in order to instill market discipline. Fordham University law professor Richard Scott Carnell explains in his report, “Handling the Failure of a Government-Sponsored Enterprise,” that the current statutory ambiguity about whether Congress will bail out GSE debt…