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US unveils Keystone pipeline environmental study

An oil stained Canadian flag lies on the ground during a protest against the Keystone Pipeline in Chicago, Illinois, May 17, 2012. The US State Department suggested that the $5.3 billion Canada-to-Texas oil pipeline would have no major impact on the envirThe US State Department suggested that a $5.3 billion Canada-to-Texas oil pipeline would have no major impact on the environment, but stopped short of recommending it be approved.