But is it fair that a foreigner can buy the state and profit of rules different than the country own citizens?
Let's push the concept further, if I'm a rich american citizen, that I leave the country and give up my nationality and then comes back with the trump gold card that I bought to profit of more interesting taxes conditions. Would it be fair?
Rich expats who hold visas and reside in a foreign country but don't pay taxes to that foreign country on their assets held back home is actually a very common thing around the world. This is encouraged because having rich people show up in your country and spend a lot of money is actually quite beneficial.
The outlier here is actually the US law that citizens pay taxes on income from outside the country. We are virtually the only country that does this. So in that sense I will agree with you that the unequal treatment is unfair, but it is the treatment of US citizens that is out of the ordinary, not the treatment of the Trump visa holders.
Let's push the concept further, if I'm a rich american citizen, that I leave the country and give up my nationality and then comes back with the trump gold card that I bought to profit of more interesting taxes conditions. Would it be fair?