You see for many years Asian govts funded the US deficit by buying US$ assets (treasuries, stocks etc) - this allowed the Americans to consume much more than what they produced. It also kept the Asians busy with work....work and more work to produce more for export to the US. The main beneficiaries of this whole setup were the Americans who get to eat more, the export companies in Asian and strangely the Asian govts who were able to create jobs by lending to the Americans to consume.
If you go to America and eat at the restaurants, you find the portions bigger, the shopping malls are bigger, the average car is bigger ...etc. Many of my friends got tired of being on the working side of this strange equation, they went to America and traded work for consumption. They worked less and got paid more, drove bigger cars, stayed in bigger houses etc.
I find it very strange why Singaporeans like emigrate when there are so many jobs for them in Singapore. We have the one of the most competitive school system in the world, the most competitive job market, we work longer and harder than any other population in the world - why would anyone want to leave such a great system?