I don't want to tax income, I want to tax wealth. And we need better international coordination. In this future scenario the super rich that take their marbles

I don't want to tax income, I want to tax wealth. And we need better international coordination. In this future scenario the super rich that take their marbles and go home will be banned from travelling into the countries that co-operate. The super rich act like they gain nothing of value from our social safety nets, but they do. Happy liberal cities cost money. I don't want a world where the Koch Brothers can leisurely enjoy a city like Toronto, Paris, or Tokyo without contributing a dime to the others around them that made them rich.