What to do about US banks that are too big to fail, to regulate, to understand, to manage or, given their importance in national income growth, to compromise their ability to grow?  Two solutions are on the table: one high in regulation and the other high in disruption. Both aim to remedy the US taxpayer subsidized risk-taking that led (in part but not in isolation) to the 2008 financial crisis. The Dodd-Frank bill (also known as The Volker Bill) tries to separate banking and investment banking activities of the large bank holding companies, as they were pre-Clinton. The regulation is so weighed down in complexity — running about 850 pages and driving 9,000-some pages of regulations — it will require over 24 million hours by federal regulators to enforce it. Even IF the bill works, Dodd-Frank keeps in place a business model that…