Whoops. Forgot the link to the American Thinker article he references:
http://www.americanthinker.com/blog/2010/07/the_question_of_birthright_cit.html
I think it is prudent and necessary for Americans to reconsider the criteria for citizenship that make anchor babies possible. But unless we mean to disclaim U.S. jurisdiction over the illegal immigrants and other regular (i.e., not treaty exempted) non-U.S. citizens on our territory, I seriously doubt that it can be done without a constitutional amendment. A careful reworking of the relevant language of the 14th amendment is readily conceivable. But it would have to rely on the simple distinction already alluded to in the Constitution, between natural born (of U.S. citizen parentage) and naturalized citizens.