Federal judge blocks construction of Keystone pipeline

A federal judge issued an order Thursday blocking construction of the $8 billion Keystone XL Pipeline until further environmental analysis is conducted. The decision comes as TransCanada is preparing to build the oil pipeline beginning in northern Montana, with pipe being shipped to the state by train and trucked to locations along the line.Environmental groups that sued TransCanada and the U.S. Department of State in federal court in Great Falls called the decision to overturn the Trump administration-issued permit a landmark ruling.