His areas of concentration include employment and immigration law. Bush is a member of the American Immigration Lawyers Association, the national association of immigration lawyers established to promote justice, advocate for fair and reasonable immigration law and policy, and advance the quality of immigration, nationality law and practice. He is also a member of the Employment, Business and International sections of the State Bar of Wisconsin. He received a B.S. degree in Business Administration from Ball State University and a J.D. degree from Indiana University School of Law–Indianapolis.