Al is the head of the tax controversy practice at Osler. He appears frequently in the courts for leading Canadian and multinational corporations. He has argued several landmark tax cases including the first GAAR case and the first transfer pricing case in the Supreme Court of Canada. Al was called to the Ontario Bar (1990) and the Alberta Bar (1994). He is also a chartered accountant, graduate of Harvard Law School (LLM), and former counsel at the Department of Justice.