the fact that birth tourism is a thing means the demand for us citizenship is way higher than supply, to the point people are willing to put their whole life savings and break the law just to have a shot at getting it through a complicated family route.

its easy to fix by making legal immigration cheap and reliable. its also great for the economy, a lot of undocumented immigrants work illegally dont pay taxes because they cant work normal jobs without getting deported.

legalizing their stay means more tax revenue, less crime and labor violations, lower costs for business and i would also say its kind of morally wrong for a rich country to buy cheap stuff made by workers in mexico or china and give none of the profits back. closed borders are glboal injustice.