The Libertarians tried to do this but they ended up choosing a stupid state to try it in (New Hampshire) rather than a smaller population state such as North Dakota.
I guess they needed a sufficient density of Starbucks in order to survive in their rugged individualistic ways!
I guess you would need to find a state people would find attractive. I don't know if I would consider North Dakota. I have thought that on the East Coast, Delaware would be a possibility?
Some are trying: