(Reuters) -Billionaire investor Bill Ackman in an X post on Sunday suggested merging U.S. government-sponsored enterprises Fannie Mae and Freddie Mac, saying the move would help reduce mortgage rates and achieve huge synergies both in their operations and in the trading price.

The Trump administration is weighing selling between 5% and 15% of stock in mortgage buyers Fannie Mae and Freddie Mac in an initial offering that could raise up to $30 billion and be the largest

Public-private government entities give all the benefits with little downside, save an enormous debt that remains off-book.