Even as the details of the Volcker Rule are hammered out, banks like Goldman Sachs (GS 1.41%) aren't too worried. Despite grabbing headlines, many of the so-called "risky activities" aren't very material to Goldman's overall business. In this segment of The Motley Fool's financials-focused show, Where the Money Is, banking analysts Matt Koppenheffer and David Hanson discuss the impact of the rule and Goldman's business.