Mother of all busts

“Freddie Mac and its fellow GSE Fannie Mae are now financing more than 80 percent of all mortgages in the U.S., up from 40 percent a year ago.”

They are holding roughly 12 trillion. What percentage has to be in default to pull them under? If the government bails them out inflation will drive up the cost of oil forcing more mortgages in default and could ultimately double the national debt in a matter of months. The result would be hyperinflation.