OPEC members, especially Saudi Arabia and Iraq, actually increased production in advance of  the 1 January 2017 implementation of their agreement to reduce volumes. In turn, those actions affect the U.S. crude supply.During the last quarter of 2016, countries in the Organization of Petroleum Exporting Countries (OPEC) internally negotiated an approximate 4.5 percent reduction in crude oil production for each member (see Ag Perspectives 12 December). According to an OPEC press statement at the time, “The global oil market has witnessed a serious challenge of imbalance and volatility pressured mainly from the supply side.” The agreement was finalized on 30 November 2016 and implemented on 1 January 2017 with production scheduled to be cu...