U.S. Federal Reserve chairman Yellen launches a sweeping review of practices for supervision of large banks in Nov. 2014. The review is designed to check "whether there are adequate methods for decisionmakers to obtain all necessary information to make supervisory assessments and determinations," and whether channels exist for decision makers to take into account divergent views when important issues arise. This is in response to questions about how the culture at the New York Federal Reserve may have stifled differing opinions on how banks should be supervised and what is proper information sharing between regulators and banks.