In the US, Fannie Mae (FNMA) and Freddie Mac are Government Sponsored Enterprises (GSEs) which buy residential mortgages and repackage them to sell on as mortgage-backed bonds. Although these bonds are not backed by the US government, most believe the GSEs would never be allowed to fail. But Dan Denning reports below on how a US Treasury report has warned that this mistaken belief and the illiquid nature of property means that an ‘interest rate shock’ could topple the US mortgage market – making the Long Term Capital Management (LCTM) crisis look like a walk in the park... Could this...