Pershing Square sues U.S. over Fannie Mae, Freddie Mac
August 14, 2014 at 18:48 PM EDT
Aug 14 (Reuters) - Pershing Square Capital Management LP, the hedge fund firm run by William Ackman, on Thursday sued the U.S. government, claiming that its stripping of profits from Fannie Mae and Freddie Mac unconstitutionally short changes investors in the companies' common stock.