commodities futures trading commission bart chilton is the latest watchdog to announce his departure from the c.f. to see now the outspoken and colorful official says to leave his post at the end of the year since two thousand and seven shelton has served as the agency's most liberal commissioner and hits his surprise exit coincides with the agency's decision to propose a rule that he long champion for his so-called position limits which would rein in speculative commodities trading this is what he told our team last year about the difficulties he faced in implementing the rule. fortunately we've been slowed down there have been delays here and there from capitol hill at the agency itself we've been held up by something called cost benefit analysis which is an extraordinary step you go through to ensure that you're giving people the actual cost of these things but it's been more like cost benefit analysis paralysis in my view and we've been hindered by threatening and actual lawsuits in analysis paralysis now he was a candid wall street critic and unapologetic supporter of dodd frank