A number of steps have been taken to reform the non-agency mortgage-backed security market but more changes are necessary, according to Michael Stegman, counselor on housing finance policy to the Treasury Department. Last week at a conference hosted by the Bipartisan Policy Center, Stegman detailed regulatory changes necessary to increase activity in the non-agency MBS market along with other changes the industry can work toward. “The last remaining piece of the puzzle is putting in place ...