washington senate agriculture committee chairman pat roberts turn heat u.s. derivatives commodities regulator account error could mean deficient fund roberts kansas republican send letter date feb. timothy massad head commodity futures trade commission call answer error accord committee letter include list 11 question cftc answer request detail brief feb. 17. pressure mount agency since last month reuters report audit firm kpmg take extremely rare action withdraw nearly decade financial opinions agency account learn significant material error relate lease auditor estimate cftc understate liabilities 194 million year sept. 30 2015 212 million previous year lawmakers concern cftc violate federal law prohibit government agencies obligate spend federal fund excess amount available nonpartisan federal watchdog government accountability office investigate whether lease errors put cftc afoul anti-deficiency law find particularly trouble 2011 u.s. securities exchange commission face similar dilemma concern lease practice account lease roberts write refer top u.s. securities regulator consider similarity agencies similarity issue public congressional inquiries gravity errant account bewilder cftc find current state affairs question roberts pose revolve around much guidance kpmg white house office management budget provide cftc also ask account practice commission use closely monitor book senator press u.s. derivatives regulator account error