TBH, I’ve gotten a lot more shit over the years from Canadian authorities at the border. The Canadians are tough about foreigners with convictions entering the country, and if you share a name with someone with a DUI, sometimes you get flagged. All border police do random tit for tit enforcement or look for specific things for reasons.
It appears to be the world's second busiest checkpoint now though if you count the Macau to China checkpoint.
https://en.wikipedia.org/wiki/Border_checkpoint#Busiest_chec...
Singapore has the smoothest border controls I’ve ever experienced; it takes me less than half an hour between stepping off a plane at Changi to stepping into my apartment.
Transiting through the American shitshow that requires clearing immigration again on the other hand…
Must be a fully automated border or something? That kind of commute would be unthinkable between e.g. Canada and the USA for most folks