Morgan Keegan, a brokerage subsidiary of Regions Financial, agreed to pay $200 million last week to settle fraud charges related to subprime mortgage-backed securities. The settlement was reached with the Securities and Exchange Commission, state regulators and the Financial Industry Regulatory Authority. The regulators accused Morgan Keegan of causing the false valuation of subprime MBS in five funds managed by Morgan Asset Management from January to July 2007. The settlement also states...