The option opther than the one you describe and the one the OIL/GAS companies prefer is the Mackenzie valley pipeline which will come to Ft McMurray Alberta where the pipeline grid for western north america starts. Here natural gas is used to produce steam which is inturn is used to produce oil from the tar sands, the worlds largest oil reserve.. most of which is then sent to the US. The other by product of the steam production is huge amounts of cogen electricy which also goes into the grid serving western north america.
The fields they wish to exploit are connected, big parts are on the canadian side. As to the control over US oil production, most of the oil companies that produce in Canada are American, and unfetterred access to Oil and gas from Canada was the big prize in the Canada US free trade deal negotiated in the 80's.
