Mortgage giant Fannie Mae is asking for our help again. This time in the tune of $7.8 billion to cover for their losses in the last quarter. Low mortgage rates reduces their profits and declining home prices caused more defaults on loans they had guaranteed. It is believed that they are suffering losses because more homeowners are paying less interest as more people are refinancing their loans while others are defaulting on their home mortgages. When property value decreases like it has in the last few years, people default on their loans because they are unable to afford them any more or because they owe more than their home is worth.