The nation’s big-bank regulator, the Office of the Comptroller of the Currency, should help broaden and extend a crackdown on financial institutions that repeatedly violate the law – notably Wells Fargo – with all the tools at its disposal. Comptroller Michael Hsu is speaking on the problem of “too big to manage” today. The speech comes about a month after the Consumer Financial Protection Bureau ordered Wells to pay $3.7 billion over widespread mismanagement of auto loans, mortgages, and deposit accounts, and promised to work with other federal regulators to find durable solutions to its constant violations of the law.