Secession again

What passes for news:
Separated by hundreds of miles and divergent political philosophies, the Middlebury Institute and the League of the South are hosting a two-day Secessionist Convention starting Wednesday in Chattanooga.
The joke in this is not that history repeats itself, the joke is in the reporting. Get this bit of helpfulness:
The U.S. Constitution does not explicitly prohibit secession, but few people think it is politically viable.
Lacking an ounce of historical insight, the story quickly devolves into the staple newspaper memes of racism, southern heritage, and left/right folderol.