Gary Gensler, outgoing chairman of the U.S. Commodity Futures Trading Commission, oversees a swaps market that is 25 times the size of the U.S. economy. The ire he’s garnered from Wall Street suggests that he has been effective in reining in deals that led to worldwide financial and economic collapse five years ago. An edited transcript of the conversation follows. Knowledge at Wharton: We are speaking with Gary Gensler, chairman of the U.S. Commodity Futures Trading Commission. Thank you for joining us today, Gary. Gensler: It’s terrific to be back at my alma mater. Knowledge at Wharton: Your career on Wall Street has not prevented you from being a target of criticism by your former Wall Street colleagues. And most of that is happening because of the way you would like to interpret [the Dodd-Frank Wall Street Reform and Consumer Protection Act] and other financial reforms. Now, your tenure comes to a close at the end of 2013.…