The constitution is a guideline for how to run a country that I am frequently a guest in. I gave all my detils to a guy at the INSpass office a while ago. Did I feel i gave up any freedom. No.

You're probably OK until they implement national ID cards to track our every move.

They - meaning the federal goverment - why would they care what moves you were making - those with nothing to hide lose nothing in a free society. Those who have the most to lose are those who wish to damage that society.