A victory for the Standing Rock Sioux and environmentalists came Friday, as the government called for a pause in work on the Dakota Access pipeline. The announcement came shortly after a federal judge had ruled that construction could continue.

“We don’t know what the implications are, other than that it’s going to have a huge chilling effect on our national ability to move forward with infrastructure projects,” Brigham McCown, former head of pipeline regulator for the US Pipeline and Hazardous Materials Safety Administration, told Reuters on Sunday. Now an industry consultant, Mr. McCown said the pause “came out of left field” and was unprecedented.

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