Increased leverage ratios helping to corral big banks

Fears abounded when international regulators went to work to reduce the risk posed by a failure of one or more big banks.  A powerful lobby, international differences and other issues threatened to neuter the effectiveness of any legislation.  While significant issues still exist, the steps taken so far, especially here in America, are a step or tow in the right direction, writes John Cassidy in the New Yorker.