Honestly, this is the huge problem of our time - globalization has happened and the concepts of tax laws and taxation of value production haven't properly adapted. The US should be taxing all the value legitimately made in the US - if a designer in the US makes something that is then mass produced in China the value taxes currently only comprehend the physical good value, not the intellectual value of the good - for things like fashionable clothing nearly all of the value is created domestically and the actual material value is inconsequential.
Over time the ability to dodge taxes in this manner has placed unfair downward pressure on countries to lower taxes in an effort to attract the revenue that can be freely moved around and hence we've got spiraling wealth inequality due to insufficient taxation.
People opting out of taxation while reaping the benefit of educated populations (or their personal education) along with security and the laundry list of the benefits of society is simply ethically unacceptable.