Immigration Lawyers on the Web (ILW) was created in late 1995 to become one of the Internet's main sources for immigration lawyers and information. This site (http://ilw.com) has links to many immigration resources.
One of the most interesting parts for libertarians is the 'Advocacy' section. This section has several articles discussing open immigration. It also has links to advocacy organizations dealing with immigration issues.
Another interesting section is the 'News' section. One article tells how secret evidence can be used against immigrants. The author of this article concludes: "The use of secret evidence has no place in a democracy, least of all in America, as it flies against the face of every notion of fundamental fairness and due process."