ReutersTransCanada formally seeks NAFTA damages in Keystone XL rejectionReutersTORONTO TransCanada Corp is formally requesting arbitration over U.S. President Barack Obama's rejection of the Keystone XL pipeline, seeking $15 billion in damages, the company said in legal papers dated Friday. TransCanada submitted a notice for an ...TransCanada Files $15B Nafta Claim on Keystone XL RejectionBloombergTransCanada Sues US Over Keystone Pipeline CancellationVoice of AmericaTransCanada sues US for $15B over Keystone XLWashington ExaminerCTV News -EcoWatch -StreetInsider.com -Daily Mailall 13 news articles »