Fannie Mae is taking on yet another threat to its continued survival. In a filing with the U.S. Securities and Exchange Commission (SEC) last Wednesday, the corporation announced its intention to work with the New York Stock Exchange (NYSE) to bring the price of its common stock above $1.00 for 30 consecutive trading days no later than May 11, 2009. NYSE rules specify that the exchange can begin delisting procedures for any stock where the average closing stock price remains under $1.00 for 30 days...