Billionaire investor Bill Ackman said that President Donald Trump’s administration is working to lift shares of the Federal National Mortgage Association FNMA, or Fannie Mae, and the Federal Home Loan Mortgage Corp. FMCC, or Freddie Mac, ahead of what could be “the largest IPO of all time.”Trump Likes To See ‘Stocks Soar’Ackman, who’s been an investor and prominent advocate for both housing finance companies since 2012, says that “It is abundantly clear that the administration wants Fannie and Freddie (F2) ...