By Patricia Liever, staff editor The easiest explanation for the housing crisis is to chalk it all up to “bad behavior”. Families took out mortgages on houses they could not afford, banks made predatory and irresponsible loans, and Wall Street packaged worthless securities and knowingly sold them to pension funds and Icelandic banks all in a scheme to make a quick buck. This explanation of how we got here is easy to understand, but ignores the structural mechanisms that allowed it all to happen. The majority of these “bad behaviors” were completely legal – if not encouraged - under the system of laws and regulations that governed the housing finance market prior to the passage of the Dodd-Frank Financial Reform legislation.