Golden visas and golden passports have attracted attention in recent years, as some countries attempt to encourage wealthy foreigners to park their money in return for residency or citizenship.
The tiny Caribbean island of Dominica, for example, receives more money from the sale of citizenship at $100,000 (€91,650) a pop than it does from taxes, Bloomberg News reported earlier this month.
The island attracts many wealthy Chinese, Russian and Iranian nationals, among others, who often face difficulties when crossing borders. They now benefit from the perks of being a Dominica passport holder, including 90-day, visa-free travel to the European Union.