Who is to blame for Detroit going bankrupt?

Liberal and Democratic policies are to blame for the collapse and bankruptcy of Detroit. Obama said the automobile industry was back on top and he refused to let Detroit go bankrupt, and it did? Obama stated this on numerous occasions! He ruined the bond holders to save the unions too. Yet another Obama campaign promise that goes unfulfilled. Has he been President for the past 5 years? His policies have been in effect since he was elected and they're not working. He is pushing us toward total dependence and continues to cave into special interests instead of standing up and putting forth policies that will work! Who do you feel is to blame and why?
Who is to blame for Detroit going bankrupt?
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