*  *  *  More than five years after the failure of Bear Stearns marked an escalation of the financial crisis, and nearly three years since the passage of the Dodd-Frank Act, debate continues over the appropriate set of policy responses to protect against financial instability.
In recent months, there has been, in particular, a renewal of interest in additional measures to address the too-big-to-fail problem. In some respects, the persistence of debate is unsurprising.