Louie Huang, a Porsche-driving, millionaire Shanghainese, has stumped up the sizeable investment needed to buy himself residency rights in Singapore.... Meanwhile, Chinese entrepreneurs with at least half a million dollars to spare are being encouraged to invest in the US economy at a seminar in a plush office suite with a spectacular view of Shanghai. Their reward is a green card under the EB-5 visa scheme, as long as the investment can be shown to have created at least 10 jobs. In 2006 Chinese nationals were granted just 63 visas under the scheme. [T]his year it is already above the...