Because the CME spot cheese market remains a market in which few daily trades occur and a small number of traders account for the majority of trades, questions exist about this market’s susceptibility to potential price manipulation. The structure and operations of the CME spot cheese market are comparable to NCE’s, including trading rules, products traded, and market participants. However, there are differences, including daily trading at CME versus once-a-week trading at NCE. CFTC and CME provide oversight of the CME spot cheese market that did not occur on NCE. Both engage in activities that may detect and deter potential price manipulation at this market. CFTC, as part of its responsibility for regulation of commodity futures markets, monitors cash markets, including the spot cheese market, and can act on indications of manipulative activity. In addition, CME conducts daily surveillance and regularly reviews trading data and market trends. According to CFTC and CME officials, they have both made efforts to address allegations of the potential for price manipulation by examining the activities of participants in the spot cheese market. As of June 2007, none of these reviews have led to an instance of CFTC taking legal action against a market participant. CME’s spot cheese market impacts federal minimum milk pricing through the NASS survey of cheddar cheese prices, which as shown below are highly correlated to the CME cheese prices. CME spot cheese prices are used to set long-term contracts, which are then captured by the NASS survey of cheese prices—a significant commodity component in USDA’s minimum milk pricing formulas. According to USDA, the agency uses the survey, in part, because it captures more transactions than occur at the CME spot cheese market. However, in addition to largely capturing CME price data, it introduces a 1- to 2-week time lag between when data are reported by NASS and when certain transactions captured in the survey occur. Moreover the survey is not currently audited to ensure the accuracy of the information. These factors may contribute to milk prices paid by dairy market participants that are either not completely accurate or not current.