Chicago Tribune | Oil market outlook makes Keystone XL economically enticing The Hill (blog) But the chorus of environmental activists was joined by a new voice — the growing number of observers who questioned whether the pipeline even made economic sense given the current oil price environment. While TransCanada will need to gauge interest ... Proceed with the pipelines. They're a better way to transport oil. US, in Reversal, Issues Permit for Keystone Oil Pipeline Donald Trump gives presidential approval to Keystone XL oil pipeline |