Market for childbirth, when it comes with a passport

Quite a few places give citizenship to babies of (even) non-resident parents if they happen to be born there. The U.S. is one, and Hong Kong is another. There's another advantage to being born in Hong Kong to a mainland Chinese mother; the baby doesn't count against the "one child" quota. All this makes for a powerful incentive to deliver the baby in Hong Kong: Mainland Chinese mothers deluge maternity wards of Hong Kong hospitals
"Children born here to mainland Chinese women automatically receive permanent residency status, entitling them to benefits including free education, free medical care and a Hong Kong passport with visa-free access to more than 100 countries.
The Hong Kong government reported that, for the first six months of the year, 44 of every 100 babies born in the former British colony had mainland Chinese mothers. The figure was about 18 of 100 in 2002, after which border controls were eased. "