http://www.bloomberg.com/news/2013-03-31/money-laundering-banks-still-get-a-pass-from-u-s-.html So we have too big to fail, and too big to prosecute. What purpose, exactly, does international banking, or even interstate banking, in the U.S., serve? Sure, it was annoying if you lived in a small state in the U.S., and, if you needed a house loan, sometimes there was exactly one bank. If they refused you, no loan. But, the world has gone from that to the other extreme. Surely it makes small transactions more efficient and loans more available. But, the downside is that you just can't rely on the market to punish mismanagement, because the cost of a failure is enormous to all of us, and that creates large costs for taxpayers, while rewarding overly risky behavior on the part of the banks. What to do? How about once again separating consumer and investment banks, and, just arbitrarily limiting the size of deposits of the consumer banks, and, limiting the size of the overall loan portfolio of all banks? We have to set some arbitrary limits to protect ourselves.