Some States have residency programs specifically targeted at nomads and expats that do not have a fixed address in the country. You don’t have to live there, yo

Some States have residency programs specifically targeted at nomads and expats that do not have a fixed address in the country. You don’t have to live there, you just need to show up in person to do all of the usual paperwork to establish your citizenship in that State. South Dakota is famous for this but a few other States are also popular. From the State’s perspective they are generating a bit of revenue from someone who otherwise consumes no resources, so it is a good deal for both parties.