If you don't have either (a) a competent military of your own, or (b) countries which have strong enough economic or cultural relations with you to want to protect your interests with their military, it is meaningless to form a micronation for the purpose of evading a large country's laws. The US or any other army could just invade, capture, or colonize your little country, which is pretty much how the world has worked throughout history.

Furthermore, without good relations with other nations, you're not going to get very far with exports, internet connections, food, passenger transport, investment, and just about everything else you need to sustain basic life and business.