Oh yes. We're still waiting on the never ending findings of the Keystone XL environmental impact study (6 years in), then we can talk about the pipeline. We simply don't know. They'll propably use this ridiculous argument for another decade so they don't have to take a position.
Hillary has obviously rehearsed this one when questioned by a reporter:
"There is a very careful evaluation continuing and that the final decision is pending"... I will refrain from commenting"