23% rotten now, apparently, sounds good

How the Banks Hid Bad Mortgages - NYTimes.com

Some Wall Street firms were better about including higher-quality mortgages in their mortgage-backed securities than others. For instance, at Goldman Sachs, 77 percent of the nearly 112,000 mortgages reviewed met the guidelines, while at Citigroup only 58 percent did. At Lehman Brothers, which later filed for bankruptcy, 74 percent of the mortgages sampled and then packaged up as securities met underwriting guidelines.