Sept. 10 (Bloomberg) -- Josh Rosner, managing director and bank analyst at Graham Fisher & Co., Mark Calabria, director of financial regulation studies at the Cato Institute, and Lawrence White, professor of economics at New York University's Stern School of Business, discuss the history and future of the Federal National Mortgage Association, known as Fannie Mae and the Federal Home Loan Mortgage Corp., known as Freddie Mac. Rosner, Calabria and White speak with Bloomberg's Carol Massar and Michael McKee on "Bloomberg On the Economy." (Source: Bloomberg)