Because they don’t the assurance that they can build the pipeline without having it arbitrarily cancelled.
It takes billions of dollars and thousands of miles of pipelines to build it and they can’t trust Bidon to allow them to build it.
Even if they had an ironclad guarantee, it would billions of dollars of prep work, three years to get the materials and equipment and at least as long to get thanpower together.
It isn’t feasible, as long as Democrats pose a threat. That’s why they said they won’t build it. Not because it isn’t needed, but because we can’t trust liberals.
In other words, even if the KXL pipeline were approved it would be a number of years before it would be carrying sludge oil to Houston for refining for export ot China and elsewhere. Therefore absolutely no help to this year’s gasoline prices, or to US oil supply for our own use later.