Just a few words.
The energy independence of the U.S. will have large ramifications across the hemisphere.
In the same way that Cuba is moving closer, I can see all of S. America benefitting from a local energy surplus. From this standpoint the Keystone pipeline is appealing. I will leave the global warming argument aside. But from the perspective of the export of LNG to nearby neighbors it may be very beneficial from a security standpoint for a long time to come.