Marshall Rothstein served as a Justice on the Supreme Court of Canada from 2006 - 2015. He previously was a Judge on the Federal Court of Canada and the Federal Court of Appeal. Garth Barriere is a criminal defence attorney in Vancouver. He was counsel in Khosa v. Canada (Citizenship and Immigration, a major Supreme Court of Canada immigration decision in which Justice Rothstein wrote a concurring opinion. In this episode Justice Rothstein provides tips for written and oral advocacy. While the focus is on appellate litigation, anyone interesting in strengthening their advocacy skills will benefit from what he has to say. We also discuss the Supreme Court of Canada's decision in Khosa v. Canada (Citizenship and Immigration), and its impact on administrative law in Canada. It is a frank conversation.