Originally Posted by
H.J.Simpson
I'm used to US and Canadian immigration which find everything strange. Flying from Europe to NY for two days still raises eyebrows at immigration in NY. At least that is my experience.
That is why.
As other posters have noted, as long as you have a valid passport you're good to go in SIN. The airport is a significant international transit point, so the immigration folks are well used to people in-transit or on short stays.