Are reduced documentation loans aiding fraudsters? Some consumer groups think so, and they have urged federal regulators to crack down hard on the practice of offering low- and no-doc options to marginal borrowers. There’s no doubt that stated income options are one of the hottest innovations in the mortgage market. According to data compiled by the Inside Mortgage Finance MBS Database, 29.3 percent of the mortgages securitized in non-agency MBS deals during the first half of 2006 were underwritten using alternative forms of...