If you own a home, even as an investment as a foreigner, you want to make sure it doesn't get burned down or broken into. This costs, and taxes are used to pay those costs. What will happen to the value of your home if the local water, sewage, roads, schools are not maintained? Even if your child odes not go to school in that district, a high quality school adds significant value to your home price.
In China, I pay taxes on my home, and the gov is expected to use some of this money to protect my home there. I'm not being double taxed, I have two homes and pay for each in their respective countries.
I think you're overlooking the key part of my point.
I'm saying that the person has no home in the USA, no nothing. But the USA still taxes income made overseas. Heck, even if this hypothetical person renounces his citizenship, they continue to take the taxes for another ten years!
The reason they are expected to pay is because they made a choice to come to the U.S. and become a part of that society. If you don't want those implications, don't make that choice.
The reason people make the choice is because they want the benefits they may get from coming to the U.S. I realize it is too hard for many that come to the U.S. to become citizens; we need to fix that problem. Our immigration strategies are not clear and makes immigrants pay on both ends of the deal.
But really, if you want to come to the U.S., suck out some wealth, and then say "so long", well, you'll get what's coming to you.
In China, I pay taxes on my home, and the gov is expected to use some of this money to protect my home there. I'm not being double taxed, I have two homes and pay for each in their respective countries.