2 percent of 4 million is still 80,000 people a year, most of whom have documentation as a US citizen on paper, but many are living abroad in a foreign country with their non-American parents. They may or may not learn English, they may or may not learn any US history, they may or may not currently reside in a rival country, and may even be raised in a culture that stands for most things Americans culturally despise, like racism, female subjugation, slavery, and communism.
Birthright citizenship puts the entire "citizen of the world" experiment on full tilt. I think the last great nation that tried this was Rome. Giving legal citizenship out like candy to the world with no shared culture or any standard of cultural assimilation has consequences.
- What is citizenship for?
- Is it primarily a legal designation, a civic commitment, a cultural identity, or some combination?
- What incentives does an outdated birthright citizenship rule create? Is the cause for such a rule when the rule was originally written over, and the remedy applied finally?
- What costs and benefits follow from those incentives? What are the real and practical trade-offs?
Those are questions worth discussing and debating.