According to the Fuzhou Oversea Chinese Association, about 10,000 children with American citizenship are now “left behind” in Fuzhou. For example, at the Starfish kindergarten at Guantou, Liangjiang county, 80% of its students hold foreign citizenship. American citizenship accounts for the majority. Since 1980s, a large number of 20-something locals went to the US. Now that most of them have managed to make a stable living overseas, it’s peak time for them to get married and have children.
There is no Hukou in the US (Hukou is a registered residency system in China). These children were granted American citizenship when they were born on American lands. Many of the parents who are illegal immigrants are actually hoping to obtain citizenship through their children when they are 21 years old.