unconstitutional blah blah blah. That libertarian pipe-dream is just that: a pipe-dream. While you and I might agree that's how it should be, the United States Supreme Court does not, and they are the only ones that matter unless you're talking about a constitutional amendment.
Well, that's not quite true. The final say is with the states and the people. Enter Nullification.
http://www.libertyclassroom.com/nullification/