I heard about it & didn't believe it. In reviewing the South Carolina state website, however, it's (unfortunately) true.
If you are a member of a subversive organization, advocating the overthrow of the US or South Carolina by force or violence, you are required to ....

REGISTER

... with the state of SC. Merely submit the proper form to the SC Secretary of State.
Every member of a subversive organization, or an organization subject to foreign control, every foreign agent and every person who advocates, teaches, advises or practices the duty, necessity or propriety of controlling, conducting, seizing or overthrowing the government of the United States, of this State or of any political subdivision thereof by force or violence or other unlawful means, who resides, transacts any business or attempts to influence political action in this State, shall register with the Secretary of State on the forms and at the times prescribed by him.
Amazingly enough, this is NOT a joke.
See Title 23, Chapter 29:
http://www.scstatehouse.gov/code/t23c029.htm
Hurry now and avoid the rush - if you fail to register, you're subject to a fine of $25,000. Or 10 years on prison. Or both......
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