There are numerous reasons to approve the pipeline.
Check it out:

At a press conference on Wednesday two Republicans and one Democrat announced a joint effort with other domestic energy development advocates and officials to get the federal government to approve the Keystone XL pipeline to “secure America’s economic and national security.”

Sens. John Hoeven (R-N.D.) and Joe Manchin (D-W.Va.) and Rep. Lee Terry (R-Neb.) were joined by Vets4Energy Advisor and National Veterans Service Organizations Liaison Rear Adm. Don Loren, American Petroleum Institute President/CEO Jack Gerard, Canadian Ambassador to the United States Gary Doer and Executive Vice-President and President of Development for TransCanada Alex Pourbaix to announce the Top 10 reasons the pipeline should be approved.