Harper stated that Keystone XL, the pipeline was,  ... and is... a no brainer,  Why ?   It is all about transport,
Pipeline vs rail.     And the rail portion is owned by Warren Buffett a key supporter of Obama's..
Obama was being grossly insincere.  Actually lieing about pipelines and fracking, and..... clean energy,
Trump wants a "better deal|, well, the USA automatically gets a  "better deal" with the pipeline.
Warren Buffett loses.