Open this photo in gallery: Then-Public Safety Minister Marco Mendicino holds a news conference in the foyer of the House of Commons in Ottawa, on May 31, 2023. Mendicino says Birju Dattani should not start as chief commissioner of the Canadian Human Rights Commission until a broad investigation is complete.Sean Kilpatrick/The Canadian Press Former Liberal public safety minister Marco Mendicino has called for a strengthened federal probe into the activities of Canada’s new human-rights chief, including presentations he gave as a graduate student about the war on terror and links to papers and tweets that have been scrubbed from the...