The Globe and Mail reports in its Monday, May 15, edition that Enbridge's Line 5 could be facing its toughest challenger yet: the very watershed the pipeline's detractors are trying to protect. A Canadian Press dispatch to The Globe reports that spring flooding has washed away portions of the riverbank where Line 5 intersects Wisconsin's Bad River, which flows through indigenous territory that feeds Lake Superior and ecologically delicate wetlands. The Bad River Band of the Lake Superior Chippewa has been in court with Enbridge since 2019 in an effort to compel it to reroute Line 5 around its traditional territory. Last month, however, Mother Nature raised the stakes. The band's lawyers argued in an emergency motion filed last week: "There can be little doubt now that the small amount of remaining bank could be eroded and the pipeline undermined and breached in short order. Very little margin for error remains." At four locations, the river is less than 4.6 metres from the pipeline and the erosion has continued in recent days at an "alarming" rate, the motion says. "Evidence strongly suggests that further bank loss could be substantial and result in exposure and rupture of the pipeline," the motion says.