A single regulator tasked with preventing threats to systemic stability would need to have considerable power and discretion. But creating such a powerful entity could reinforce the moral hazard problem resulting from the idea that some firms are too big to fail.
Financial Regulatory Reform — A New Foundation: Rebuilding Financial Supervision and Regulation. Washington, DC: Department of the Treasury, June 17, 2009."
The Role of the Safety Net in the Financial Crisis," Speech by Jeffrey M. Lacker to the Asian Banker Summit, May 11, 2009