Despite a concerted effort by the Obama administration to rebuild the housing market, it continues to languish. The government’s Home Affordable Modification Program (HAMP) failed to stymie foreclosures last year, and 2010 may not be any better. Instead of declining, the number of foreclosed homes in the United States last year increased to a record 2.8 million, a 21% rise over 2008 and 120% over 2007, according to RealtyTrac. Foreclosures in the fourth quarter jumped 18% over the same period last year.