If the Jamie Dimon hearing was ever going to be more than just political theater, it would have answered at least one essential question: Would the Volcker rule have prevented the so-called hedges that led to $2 billion in losses at JPMorgan?

President and CEO of JPMorgan Chase Co. Jamie Dimon (L) arrives to testify before a Senate Banking Committee hearing on Capitol Hill June 13, 2012 in Washington, DC.

Instead, and incredibly, Dimon contended twice that he didn’t know what the Volcker rule says. “I don’t know what the Volcker Rule is, it hasn’t been written yet,” the regaled banking chief told senators today.