The Federal Reserve Board on Wednesday issued a final rule to implement section 622 of the Dodd-Frank Wall Street Reform and Consumer Protection Act, which generally prohibits a financial company from combining with another company if the ratio of the resulting company’s liabilities exceeds 10 percent of the aggregate consolidated liabilities of all financial companies.
More information via press release: http://www.federalreserve.gov/newsevents/press/bcreg/20141105a.htm