Comment by green_man_lives

This argument is so lazy. Simply levy a tax on them each year that is their net worth multiplied by the risk-free rate. That takes care of most people with money in publicly traded companies. If people with more "diversified" portfolios try to move their money elsewhere, penalize them for it. Revoke their citizenship, make it harder for them to do business without a majority percentage of their wealth in the US. It's not "hard" to do, we just lack the political will.