Fannie Mae scored some points with officials in the manufactured housing industry – and most likely on Capitol Hill as well – for its recent decision to resume purchasing a high loan-to-value financing product. The GSE announced last week that it would once again purchase 30-year loans for manufactured housing units that are secured with down payments of only 5 percent. Last summer, Fannie declared that all 30-year manufactured-housing loans would have to include downpayments…