Numerous times in the last few years, scientists have concluded that the Keystone XL
project was not creating environment harm, despite the claims of environmentalists. In the affected area, there are already 20,000 miles of pipeline so adding a few hundred more is not putting the ecology in peril.
Yet the president has consistently blocked approval, choosing environmentalists over union members. Why, since both vote Democrat? The president has long been convinced that if he can penalize existing companies, and subsidize the kind he prefers, the new ones will win. Blocking Keystone XL and demanding new regulations from the EPA has been part of that effort.