> I don't know about the United States of America, but in my country it's very common to do volunteer work.
Your business plan for America:
1. Live in an unknown country Z that's not the US, about which you don't know much.
2. Do volunteer work in Z, consisting of doing highly unknown stuff X for a secret number of minutes per year Y.
3. ...
4. Imply unknown profits for Z
5. The US implements a copy of the unknown volunteering in unknown country Z
6. ...
7. Imply enough unknown profits for the US to fix all of its unspecified problems.
Am I missing something, like known or unknown unknown?