The National Fair Housing Alliance filed a housing discrimination lawsuit against Fannie Mae for allegedly not properly maintaining real estate-owned properties in 38 metropolitan areas with high proportions of African-Americans and Latinos.The lawsuit was filed this week in the federal district court in San Francisco. Fannie denies the allegations. According to the NFHA and 20 local fair housing groups across the country, Fannie purposely does not maintain its foreclosed properties in middle- and working-class minority neighborhoods to the same level of quality it does for foreclosures it owns in comparable white neighborhoods. Foreclosed properties in minority communities were littered with debris and trash, marked by graffiti...