Comment by DoctorOW

No, because the resources are owned by the United States regardless of how much the people like/dislike the United States, to leave the United States you have to physically leave it. You can't just announce your land is part of some other country. Sure, you could try and fight Civil War 2, but remember all the might of the US Military soldiers/weapons/intelligence/etc. belong to the United States side. You have a 2nd amendment right to form this opposing militia but you'd have to outspend the US Military using your own resources.