Fed's Tarullo (dovish, FOMC voter): Should replace risk-weighted capital with measures based on stress tests; one size fits all approach to bank regulation has been abandoned - comments from Bank Regulation Conference in Chicago - Threshold for enhanced bank supervision could be raised to $100 billion from $50 billion. - Financial regulation needs to be broadened to cover non-bank financial firms. - Need to re-examine exclusion of small community banks from certain financial activities. - Need to establish minimum margin requirements for securities financing.