Oil pipeline project of the company Keystone XL exported from Canada to the United States. Have been rejected by the US president, Barack Obama. National energy board of Canada approves of the pipeline company, Keystone XL in March, but since it had to run across the border in United States and Canada. The need to get permission to the president before construction, which the president of the United States" Iraq, Obama said, it"s not the advantage to the nation. The environmentalists said. It is dangerous and edit them difficult.
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