I thought we got most of our oil from Canada?
No, Canada is the largest single country supplying oil to the US, but it is ~2.2 MMBPD from Canada while we use 16.5 MMBPD of refined product (another 2.2 MMBPD of natural gas liquids for our total petroleum use.
http://www.eia.gov/dnav/pet/pet_move_impcus_a2_nus_epc0_im0_mbblpd_m.htm
http://www.eia.gov/dnav/pet/pet_cons_psup_dc_nus_mbblpd_m.htm
We import about 4 MMBPD from OPEC nationa.