Canada says Line 5 closure would violate 1977 treaty, requests diplomatic negotiations By admin Posted October 4, 2021 In In the News Canada says Line 5 closure would violate 1977 treaty, requests diplomatic negotiations2021-10-042021-10-04/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px The Canadian government said Oct. 4 it is requesting diplomatic negotiations with the US to…