The agreement under which Canada turns back asylum-seekers crossing from the United States has adequate safety valves, and the U.S. asylum system has sufficient safeguards, to make the pact constitutional in Canada, the federal government argued in court documents filed with Canada’s Supreme Court on Wednesday. https://www.reuters.com/world/americas/canada-us-asylum-seeker-pact-has-adequate-safeguards-canada-argues-court-2022-05-18/