Dating back to at least the 1980s, Jens Binderup Jensen volunteered with Boy Scout troops and church youth groups around Metro Vancouver, a lawsuit alleges, providing him access to kids attending day camps and field trips, even overnight outings, some of which took them across the U.S. border into Washington state. Jensen pleaded guilty in provincial court in Langley in 1994, at the age of 47, to 11 counts of sexual assaulting young boys over many years, local media reported at the time. His victims were said to be his nephews, the sons of Jensen’s three nieces. But...