Keystone Backers Find Nebraska Judge Not Only Hurdle

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Just when it looked like the Keystone XL pipeline cleared a key U.S. State Department hurdle, a Nebraska judge showed this week that obstacles remain.

There may be others, too. The Environmental Protection Agency might protest conclusions in a U.S. report. A legal challenge tied to endangered species such as the interior least tern may trip up the project. Secretary of State John Kerry may emerge as an ally in making the case against the project.