Faced with proposed new regulations for mortgage-backed securities designed to prevent another financial crisis, some Wall Street banks are saying that they should have no responsibility “to undertake any sort of credit analysis” when creating and selling mortgage-backed securities, and that they have no ability to do that, according to Floyd Norris, a commentator on finance and economics, in his August 5, 2010 New York Times article, “Caveat Emptor, Continued.”