"Canada is the number two exporter of Natural Gas in the world, Number one, Qatar."

Incorrect.
Russia is #1 (by quite a bit), then Qatar. Even Norway is still ahead of Canada. Meanwhile, US gas exports are surging on multiple fronts: as LNG via Louisiana and by pipeline to Mexico and Ontario.

Exports of Cdn gas to USA peaked in 2002 for two reasons: our production of conventional gas was peaking (and is now in terminal decline) and USA was beginning to exploit its massive reserves of shale gas. US gas is dirt cheap which is why southern Ontario is increasingly burning Marcellus gas as opposed to Cdn gas from out west.