"The proposed Keystone XL pipeline survived nine years of protests, lawsuits and political wrangling that saw the Obama administration reject it and President Donald Trump revive it, but now the project faces the possibility of death by economics.

Low oil prices and the high cost of extracting Canadian crude from oil sands are casting new doubts on Keystone XL as executives with the Canadian company that wants to build it face the final regulatory hurdle next week in Nebraska.

The pipeline proposed in 2008 has faced dozens of state and federal delays, many of them prompted by environmental groups who ultimately persuaded President Barack Obama to deny federal approval in November 2015. President Donald Trump resuscitated the project in March, declaring that Calgary-based TransCanada would create "an incredible pipeline."

After all that, a TransCanada executive raised eyebrows in the energy industry last week when he suggested that the pipeline developer doesn't know whether it will move forward with the project."

Grant Schulte reports for the Associated Press August 3, 2017. [2]