U.S. regulators will not allow mortgage giants Fannie Mae and Freddie Mac to pay their departing chief executives multimillion-dollar severance packages outlined in their contracts, The Washington Post reported on Sunday. *snip* Mudd and Syron were entitled to combined pay and bonus packages worth about $24 million as part of the government's plan to restructure the troubled companies, which own or guarantee about half of the $11 trillion outstanding home mortgages in the United States.