Monday's decision by the Minnesota Court of Appeals to uphold the PUC's approval of Enbridge's Line 3 pipeline came as a blow to environmental activists like Winona LaDuke, who only three days before had joined a press call with other activists to celebrate the abandonment of the Keystone XL pipeline. But when asked when enough is enough, if there is a point where she will give up, LaDuke says, "I'm in it 'till the end."