Nullification, interposition, whatever you call it, it's back---again

Here's a good overview of the history of the idea of nullification in the U.S. Not something relegated to the pages of your history text, this doctrine, discredited as it was by the Civil War, is alive and well today in some states of the nation. Read the full story by clicking below:
http://www.tnr.com/article/politics/the-essence-anarchy?page=0,0http://www.tnr.com/article/politics/the-essence-anarchy?page=0,0

Then leave your thoughts and comments, please.