Nope. The south already tried that.

If you want to gain independence, you have to fight the federal government’s monopoly on violence. At its core, that’s how all law is backed up. Two things you need to be a country. First, the ability to backup your independence with force. Second, the acknowledgement of the international community and their willingness to sign treaties with you. Sealand doesn’t have any issues defending their “independence”, but no one has signed a treaty with them for instance.