The U.S Senate has approved a measure approving the Keystone XL Pipeline, but the project still faces a snag in South Dakota. TransCanada lost its certification for a building permit last year because it failed to complete the project within four years. Now it has to certify to the Public Utilities Commission that the project as it now stands meets the standards outlined in the permit issued in 2010. PUC’s staff attorney tells Victoria Wicks the Senate vote doesn’t change that.