In a Report from the Twenty-Second Session the United Nations Permanent Forum on Indigenous Issues, Economic and Social Council issued a recommendation on Line 5:

65. The Permanent Forum calls upon Canada to re-examine its support for the
    Enbridge Line 5 oil pipeline, which jeopardizes the Great Lakes in the United States.
    The pipeline presents a real and credible threat to the treaty-protected fishing rights
    of Indigenous Peoples in the United States and Canada. The Permanent Forum
    recommends that Canada and the United States decommission Line 5.