Premise: Banking in the United States is regulated by both the federal and state governments. The five largest banks in the United States at December 31, 2011 were JPMorgan Chase, Bank of America, Citigroup, Wells Fargo, and Goldman Sachs. In December 2011, the five largest banks' assets were equal to 56 percent of the U.S. economy, compared with 43 percent five years earlier.
Hypothesis: Wells Fargo is under investigation.