Federal prosecutors plan to argue at a Minnesota trial that two men were part of a criminal network stretching from India to Canada that smuggled families seeking better lives in the United States.

Nearly three years after an Indian family of four froze to death in Canada during an ill-fated attempt to enter the US, two men are facing trial, accused of trying to help smuggle them across the border. It was a backpack with child’s clothing and toys that first worried US Border Patrol agents.

A long-awaited trial in Minnesota is scheduled to begin Monday with jury selection for two men accused of helping smuggle people across the U.S.-Canada border, including four members of an Indian family who froze to death in Manitoba as they tried to make it across in blizzard conditions.