National treatment
https://globalarbitrationreview.com/article/1177100/canada-faces-nafta-claim-over-coal-phase-out (requires subscription)
https://www.iareporter.com/articles/canada-hit-with-investment-treaty-arbitration-from-u-s-coal-miner-relating-to-province-of-albertas-phasing-out-of-coal-fired-energy-generation/ (requires subscription)