Well Archangel you brought up a valid point and here is my take on your questions. A natural rights grant national security. We return to the foundation of our nation, each state is effectively an independent nation state.

I would only add mandatory military service for 2 years to ensure a well regulated unorganized milita. I would require any immigrant to spend this same term of service for citizenship.

I would also cut taxes across the board along with welfare programs to reduce the tax burden and lower wages while raising the standard of living. But thats only a starting point. A large reason for the cost of goods and services would include the excessive taxation. As for work vesa I'd keep it simple if you come in to visit you can work legally. Just come through customs and their you go. Citizenship should be required to own property and vote.