According to the US Energy Information Administration (EIA), higher domestic production of crude oil in the last few years has contributed to a significant decrease in crude oil imports, from about 5.5 mb/d in January 2009 to 3.5 mb/d in January 2015. The increased economic availability of domestic light, tight crude oil has nearly eliminated light crude oil imports from the Gulf region. In addition, in just one year (from the first quarter of 2014 to the first quarter of 2015), medium-grade crude oil imports from the Gulf region decreased by 45%, from 1.5 mb/d to 0.8 mbd; meanwhile, heavy crude oil imports from the Gulf increased by 22% (+0.4 mb/d).
Saudi Arabia remains the largest medium-grade crude oil supplier to the United States, despite a 52% drop between the first quarter of 2014 and the first quarter of 2015 (from 0.9 Mb/d to 0.4 mb/d). Medium grade oil imports from Kuwait also fell by 46% over this period, from 0.4 mb/d to 0.2 mb/d.
Source: EIA