This is completely backwards. Pope Francis should urge Trudeau to have the Liberal Party of Canada apologize to residential school victims. Through most of the the period that residential schools were in operation, the Liberal Party of Canada was in power as the government of Canada. Without government policy under a succession of Liberal governments the Catholic Church would not have been involved in residential schools.  Blaming the Catholic Church is a pathetic hypocritical attempt to deflect the blame from the Liberal Party of Canada.