The past decade has seen a major shift in the U.S. crude oil market. As a result of the surge in domestic production that was largely enabled by hydraulic fracturing — a practice Democratic presidential candidate Bernie Sanders vows to ban and his rival Hillary Clinton promises to severely restrict — U.S. crude imports fell from 10.1 million barrels per day in 2005 to 7.4 million bpd in 2015. Over that span, the share of U.S. oil consumption satisfied by imports fell from 48.7% to 37.9%.
