Fannie Mae is the common name for the Federal National Mortgage Association (FNMA).  Fannie Mae is a company that deals with the secondary mortgage market. It is a New Deal agency founded by the U.S. government to provide increased liquidity for mortgages. The company was bailed out by the US Government (along with Freddie Mac) after making billions in loans available to borrowers with demonstratively poor credit histories. It was placed in the conservatorship of another government sponsored enterprise, the Federal Housing Finance Agency (FHFA) for mismanaging its affairs in September 2008. It currently guarantees against default about $5 trillion in mortgages of American homeowners -- nearly half of all mortgages in the United States.
Fannie does not lend money directly to consumers. Instead, it purchases bundles of loans that banks make on what is called the secondary market. Fannie Mae issues Guidelines to mortgage lenders on the documentation required from borrowers to conform to what Fannie Mae agrees to buy. Qualifying guidelines primarily focus on income, credit reports, and loan to value. By Fannie Mae guaranteeing purchase of bundles of mortgages from banks, lenders funds are quickly replenished and they are able to originate more loans.
When Fannie Mae purchases a mortgage from a loan originator, it is repackaged and sold in bundles to investment banks and other entities who market them globally with a credit rating stamp.
Fannie Mae lowers guidelines for subprime borrowers
- Main article: Community Reinvestment Act
Fraudulent accounting 1998 -2006
In 2006 Fannie Mae was wracked by an accounting scandal. Regulators found a culture of corruption where management overstated earnings by $11 billion during the late 1990s and reaped huge bonuses for themselves. As Fannie Mae was taken into conservatorship in September 2008 it was reported Barack Obama received more than $120,000 in contributions from the government sponsored entity, more than any other political candidate for office since 1989.
The top three recipients of campaign contributions from Fannie Mae over the last two decades were all Democrats. 
No.1 Connecticut Senator and former DNC ChairmanChris Dodd
No.2 Illinois Senator and later President Barack Obama
No.3 Massachusetts Senator and later Secretary of State John Kerry
- Blaming Fannie and Freddie, Ben Zimmer, Visual Thesaurus, September 16, 2008
- Who is Fannie Mae Today? About Us. www.fanniemae.com
- Loan to Value (LTV); loan size in relation to the properties appraised value. For example, at the time of the 2008 crash, 80% financing, or 80% LTV was the maximum amount Fannie Mae guidelines would approve for borrowers with qualifying credit scores without mortgage insurance (also known as foreclosure insurance, which can significantly increase the monthly payment). LTV thus can be manipulated through an inflated appraisal.
- True story. You can watch CNBC's House of Cards special here to see it; reporter David Faber travels to the small town of Narvik, Norway, which invested $200 million lured in by their AAA ratings and the assurance by Citigroup of their safety. The town has had to close schools, slash expenditure to the elderly, and cut back on fire department hours.
- Fannie Mae Eases Credit To Aid Mortgage Lending, Steven A. Holmes, New York Times, September 30, 1999.
- `Arrogant and unethical': Fannie Mae to pay $400 million penalty, Robert Manor, Chicago Tribune, May 24, 2006.
- Update: Fannie Mae and Freddie Mac Invest in Lawmakers, By Lindsay Renick Mayer, September 11, 2008. opensecrets.org
- White House Fires Back at Times Over Housing Meltdown Story Fox News, December 22, 2008