Not true, already most of Venezuela Crude Oil is refined outside the US.
They produce 2.44 MMBPD and we import less than 1.1 MMBPD from Venezuela.
Total Oil Supply, Selected Countries, Most Recent Quarters and Years
http://www.eia.doe.gov/emeu/ipsr/t22.xls
U.S. Crude Oil Imports by Country of Origin
http://tonto.eia.doe.gov/dnav/pet/pet_move_impcus_a2_nus_epc0_im0_mbblpd_m.htm
Good links, thanks.