He is also the Director of the Law School's Low-Income Taxpayer Clinic. Prior to joining the faculty, he was an attorney with Chicoine & Hallett, P.S., in Seattle, Washington, where his practice focused on tax controversy and litigation. He also served as a Trial Attorney with the United States Department of Justice Tax Division, and he was an Attorney-Advisor to the Chief Judge Arthur L. Nims III of the United States Tax Court. Professor Schumacher is the author of the chapter entitled, "Key Ethical Challenges for the Business Planning Lawyer, " in Dwight Drake's book Business Planning: Closely Held Enterprises (West Publishing).