The U.S. Conference of Mayors has joined a growing number of entities urging the Department of Housing and Urban Development, Fannie Mae and Freddie Mac, and certain major banks to stop selling distressed and nonperforming mortgages to Wall Street investors. Rather than sell pools of NPLs to private-equity firms, hedge funds and other speculators, sell them to qualified nonprofits for the purpose of saving homes from foreclosure and creating affordable housing, the group stated in a resolution co-sponsored by 17 mayors. The mayors point to a joint study issued recently by the Center for Popular Democracy and the ACCE Institute. The study said most NPL pools are auctioned off at steep discounts to hedge funds and private-equity firms. “Although Fannie and Freddie have been unwilling to offer principal reduction to struggling homeowners, they often offer steep discounts when they ...