Alec Walen recently published articles in Law and Philosophy and Ethics and Law-The Ethicalization of Law.  He published "Transcending the Means Principle" in Law and Philosophy in June 2013.  A copy of the abstract is available here.  He also published "Reflections on Theorizing About the Moral Foundations of the Law: Using Laws Governing Detention as a Case Study" in Ethics and Law--The Ethicalization of Law (S. Voneky et al., Eds.) in 2013 (Springer Press).  A full copy of the article can be accessed here.