Sure. Make them illegals and give them free stuff.
One way to secede would be to make yourself an illegal alien. Take a page from their playbook and steal an identity. Forge enough documents to credibly appear to be from Guatamala, Mexico or where ever. Get a phone card and make regular calls 'back home.' (bank manager, stock broker, real estate agent) Set up a bank account there and send regular payments to it for 'your family.' (It will be for your family if you ever have to bug out. Not U.S. taxable and can't be confiscated like a citizen's money trying to expatriate.)
Then sign up for every freebie illegals get here. Steal some citizen's SS# to work. Use all the lib social orgs to handle any legal problems you have for free. Viola! Self-seceded, self-deported.