Here is another chart (with the website source) showing US import/export of petroleum to/from the 5 largest trade partners. No way I can get any of these charts to line up exactly due to difference in formats or whatever.
Top sources and amounts of U.S. petroleum imports (percent share of total), respective exports, and net imports, 2015
http://www.eia.gov/tools/faqs/faq.cfm?id=727&t=6
million barrels per day
Import sources……….
........... Gross imports............ Exports………........ Net imports
Canada………. 3.76 (40%)……………. 0.96…………………… 2.81
Saudi Arabia………… 1.06 (11%)……………….. 0.00……………………. 1.06
Venezuela………….. 0.83 (9%)……………. 0.07…………………… 0.75
Mexico……………….. 0.76 (8%)…………………. 0.69………………………. 0.07
Colombia…………….. 0.40 (4%)……………….. 0.17………………… 0.22