Where did he get the money that he used to invest? Did it appear magically from somewhere else? Odds are that he worked for it and then invested it.
It’s still his money. The united states may be the parent that provided the environment for a successful child, but the parent has no right to the future income of the child when that child is an adult.
If the child wishes to give money back to the parent, then that is his choice but it is not for the parents to arbitrarily decide that it belongs to them.
What you constantly don’t understand is that the vast majority of these people bring value, jobs, money to the United States. Do you think increasing taxes, regulations, and transaction fees will support businesses and make them successful? Do you think demonizing businesses and putting them on blacklists will result in more businesses or less? Because these are the things you have advocated for.
