
Four years on from the financial crisis, new scandals still seem to break out every few months. HSBC, the big British bank, just agreed to a $1.9 billion settlement over money laundering. That was followed by the arrests of several London traders, including one who had worked for Swiss giant UBS and Citigroup, on suspicion of interest-rate manipulation--and banks are bracing for more to come. A driving force behind this latest crackdown tied to LIBOR, the London interbank-loan rate that is critical to global banking, is Gary Gensler, chairman of the U.S. Commodity Futures Trading Commission (CFTC), who since 2009 has...