Anyone, irrespective of nationality, willing to part ways with $5 million (€4.6 million) will not only be granted indefinite leave to remain in the US but will have their application for an American passport expedited. If nothing else, Trump’s on-the-fly announcement at least breathed new life into the investment migration sector, which was estimated to be worth an annual $22 billion (€20.3 billion) globally in its pre-war heyday.