He can’t see the job opportunities for everyone or the self reliance of oil for the country.
Check it out:

The proposed Keystone XL pipeline to carry crude oil from Canada will only benefit our northern ally, and will neither lower gas prices in the U.S. nor entail a “massive jobs bill for the United States,” President Obama said while traveling in Asia last week.

During a press conference Friday in Yangon, Burma, Obama was asked about the project, which has been under review by the State Department for six years and faces a Senate.