Liberty Magazine's October issue has two very powerful, provocative pieces on immigration, by Stephen Cox and Bruce Ramsey. Cox's especially presents an unusually forthright, honest, and open libertarian case against unlimited immigration. (I did not read yet the pro-immigration piece by Richard Fields, so can't comment on it.) I will also say that the latest issue of The New Individualist also has an eloquent Objectivist defense of fairly open borders. But Cox's piece is very well done and though provoking. It would be interesting to see the response by honest libertarian open-borders advocates to his many fine points.For more on this topic: Hoppe's writings on immigration; and my A Simple Libertarian Argument Against Unrestricted Immigration and Open Borders (and followup).