Fannie Mae and Freddie Mac’s guarantee fee stucture continued to convey cross-subsidies from lower-risk mortgages to higher-risk mortgages but overall cross-subsidization in 2010 declined from previous years, according to a report from the Federal Housing Finance Agency. The agency said cross-subsidization in single-family guarantee fees charged by the two government-sponsored enterprises remained evident in 2010 across product types, credit score categories and loan-to-value ratio categories. “There were cross-subsidies from mortgages that posed lower credit risk, on average, to loans that posed higher credit risk. The greatest...