Rawls, Political Liberalism, and the Family

In August 2012, Robby George recommended (here) an article by a former student of his, Matthew O'Brien--an article on political liberalism and same-sex marriage--that had just been published in the British Journal of American Legal Studies.  A response to O'Brien's article has now been published, also in the British Journal Of American Legal Studies, by Greg Walker of Cardiff University (Wales, U.K.).  The title:  Rawls, Political Liberalism, and the Family.  Walker writes, in an e-mail message to me, that his response "demonstrates deep flaws in O'Brien's reading of Rawls and of aspects of U.S. constitutional law."  Walker's article is available here.