Its not an idea. Its been happening for almost 25 years now.

https://en.wikipedia.org/wiki/Free_State_Project

They also just negotiated a complete elimination of state inspections for noncommercial vehicles.

https://www.wmur.com/article/new-hampshire-vehicle-inspections-62725/65223243

There is a “Liberty Caucus” within the State GOP. They push pro-liberty issues but are technically registered Republicans.

For example, the Liberty Caucus broke with GOP leadership and voted with Democrats to pass bills to legalize cannabis.