… treaty violation for us as Native people,” Confederated Salish … by the United States and Canada in 1909, establishing the … and then actually back into Canada,” explained biologist Erin Sexton. … CSKT officials to urge Canadian Prime Minister Justin Trudeau …… treaty violation for us as Native people,” Confederated Salish … by the United States and Canada in 1909, establishing the … and then actually back into Canada,” explained biologist Erin Sexton. … CSKT officials to urge Canadian Prime Minister Justin Trudeau …