In a blow to some tribes and environmentalists, the Minnesota Court of Appeals has upheld state approval of the Line 3 pipeline replacement project.  The panel voted 2-1 to affirm the PUC’s decision to issue a certificate of need for Enbridge Energy’s multi-billion-dollar project.  The appeals court, in their legal decision, was addressing a challenge brought by several groups saying oil demand was low and an environment impact statement was inadequate.