A pipeline that runs on the lakebed of the Straits of Mackinac could be replaced by a new pipeline tunnel The Bay Mills Indian Community tribal council voted to banish Enbridge’s Line 5 pipelines from …A pipeline that runs on the lakebed of the Straits of Mackinac could be replaced by a new pipeline tunnel The Bay Mills Indian Community tribal council voted to banish Enbridge’s Line 5 pipelines from …