He is also the author of FFF's award-winning book Separating School & State: How to Liberate America's Families; Your Money or Your Life: Why We Must Abolish the Income Tax; and Tethered Citizens: Time to Repeal the Welfare State. Calling for the abolition, not the reform, of public schooling, Separating School & State has become a landmark book in both libertarian and educational circles. Sheldon's articles on economic policy, education, civil liberties, American history, foreign policy and the Middle East have appeared in the Guardian, Washington Post, Wall Street Journal, American Scholar, Chicago Tribune, USA Today, Washington Times, The American Conservative, Insight, Cato Policy Report, Journal of Economic Development, The Freeman, The World & I, Reason, Washington Report on Middle East Affairs, Middle East Policy, Liberty magazine and other publications.