http://online.wsj.com/article/SB10001424052748704152804574628350980043082.html?mod=djemEditorialPage The Biggest Losers Behind the Christmas Eve taxpayer massacre at Fannie and Freddie. Happy New Year, readers, but before we get on with the debates of 2010, there's still some ugly 2009 business to report: To wit, the Treasury's Christmas Eve taxpayer massacre lifting the $400 billion cap on potential losses for Fannie Mae and Freddie Mac as well as the limits on what the failed companies can borrow. The Treasury is hoping no one notices, and no wonder. Taxpayers are continuing to buy senior preferred stock in the two firms to cover their growing losses—a combined $111 billion so far. When Treasury first bailed them out in September 2008, Congress put a $200 billion limit ($100 billion each) on federal assistance. Last year, the Treasury raised the potential commitment to $400 billion. Now the limit on taxpayer exposure is, well, who knows?