Three environmental groups plus two tribes — the Red Lake Band and the White Earth Band — are going to court to challenge the state Public Utilities Commission’s approval of Enbridge’s controversial Line 3 pipeline upgrade through northern Minnesota. Margaret Levin (LEV-in) with the Sierra Club’s North Star Chapter says if the P-U-C had done an adequate review, it would have been clear that the pipeline isn’t needed and risks outweigh any possible benefits. Backers respond the project has had rigorous environmental review.