In this video, Motley Fool contributor John Reeves looks at the recent spate of legal cases and regulatory judgements being levied against several of Wall Street's largest and most prominent financial institutions, such as JPMorgan Chase (JPM 0.07%), Goldman Sachs (GS 0.50%), and Bank of America (BAC 0.64%). Is this the beginning of a crackdown that will bring about a new and more tightly regulated way of doing business on Wall Street? Or just a brief show of force that won't bring about any lasting impact? John gives investors his take.