Unchecked migration would see Singapore swell.
It was reported in the media that Singapore and New Zealand's population would triple if everyone who intends to come and leave were allowed to do so.
If it happens all of a sudden, today's Singapore population of 5 million will swell to 15 million. ( locally born Singaporean stood at 3.5 million )

Just imagine at Punggol as it is today, it's already quite packed. When fully developed accordine to plan, the density would easily be more than double it's present figure. Frightening ? is'nt it. When someone makes a miscalculation, and if the press estimates are correct, our population will shoot up three fold.
Can only predict when that time comes, Singapore will be a mad house.
New Zealand surely will be a better place to live in.