Several current factors may make a merger of the SEC and CFTC seem conceptually more appealing that it used to be. However, there are still great differences between the markets they respectively oversee.One idea that seems to have acquired some sort of political immortality is that the Securities and Exchange Commission (SEC) and the Commodity Futures Trading Commission (CFTC), which oversee the regulation of U.S. securities markets and that of U.S. derivative markets, respectively, should be merged into a single agency that would supervise both. This idea was given a new life most recently on 20 April when the Volcker Alliance, a think tank founded by former Treasury Secretary Paul Volker to promote more effective government, released a r...