SEATTLE — A second defendant has been convicted of sabotaging railroad tracks near the U.S.-Canada border in Washington state just before a train carrying crude oil was due to pass through — apparently part of a campaign to protest construction of a pipeline across British Columbia.Following a two-day trial and three hours of deliberation, a federal jury in Seattle on Thursday convicted Ellen Brennan Reiche, 28, of Bellingham, of violence against a railroad carrier. Her co-defendant, Samantha Frances Brooks, 24, pleaded guilty in July.