In my experience, immigrants start more businesses at a higher percentage than the percentage of average americans doing so. They create jobs. Additionally, the shock of merging cultures, while uncomfortable, creates such a rich environment for growth and new ideas that I think it's worth it. If you're christian, your book says a hell of a lot, very often, about welcoming and treating immigrants well... like listed-as-a-reason-for-destroying-israel importance level. And then the pure hypocrisy of wanting to vote with ones feet but not allow those from poorer countries to do the same is painful af.