Exporting energy does NOT drive up the price at home. It increases production at home.
Tell that to Canadians whose gasoline and natural gas prices have gone through the roof over the last 25 years even as the extraction of oil and gas in Canada has accelerated dramatically.
Exporting energy creates a HUGE production capability and puts US in charge of strategic assets for other countries. You don’t start a war with the country that supplies your most critical raw materials.
That would be true if you're talking about exporting energy to potential enemies, but the U.S. actually imposes embargoes against foreign adversaries that explicitly forbid domestic producers from selling to them.
According to the most recent numbers posted by the U.S. Dept. of Energy for September 2017, the largest customers of U.S. petroleum exports are Canada, China, South Korea and Great Britain. China would fit your narrative, but are any of the other three even remotely considered potential adversaries of the U.S.?
Help me understand. Was Canada's energy prices WAY below world prices then or WAY above them now?