Is deregulation to blame?

In the lates issue of Claremont Review of Books, " is James Keller's "Is Deregulation to Blame?" In the review Keller evaluates two new books on cause of the financial crisis.

Taking issue with Judge Richard Posner's A Failure of Capitalism, Keller asserts that the financial crisis wasn't caused by financial deregulation. The solution to the crisis is therefore not more regulation. The Obama administration has of course taken the position that massive additional regulation is necessary." [Power Line]