It was immigration, but next generation of all immigrants (native born) adopts host country total fertility rate in this context.
https://www.pewresearch.org/short-reads/2019/08/08/hispanic-...
https://www.pewresearch.org/short-reads/2016/10/26/5-facts-a...
https://www.pewresearch.org/wp-content/uploads/2019/08/FT_19... visually nails this.
Now, would these people have had a higher birth rate if they remained in their LATAM countries? The data indicates no.
Latin America’s Baby Bust Is Arriving Early - https://www.bloomberg.com/opinion/articles/2025-05-22/latin-... | https://archive.today/EPMAU - May 22nd, 2025
Population Prospects and Rapid Demographic Changes in the First Quarter of the Twenty-first Century in Latin America and the Caribbean - https://repositorio.cepal.org/server/api/core/bitstreams/dc5... - 2024
It started falling to 1.6 around 2008 ( https://www.macrotrends.net/global-metrics/countries/usa/uni... ) which coincided with the millennials getting into the child-bearing age. And the millennials are much more likely to live in cities, even though they don't want that: https://news.gallup.com/poll/245249/americans-big-idea-livin...
It was immigration, but next generation of all immigrants (native born) adopts host country total fertility rate in this context.
https://www.pewresearch.org/short-reads/2019/08/08/hispanic-...
https://www.pewresearch.org/short-reads/2016/10/26/5-facts-a...
https://www.pewresearch.org/wp-content/uploads/2019/08/FT_19... visually nails this.
Now, would these people have had a higher birth rate if they remained in their LATAM countries? The data indicates no.
Latin America’s Baby Bust Is Arriving Early - https://www.bloomberg.com/opinion/articles/2025-05-22/latin-... | https://archive.today/EPMAU - May 22nd, 2025
Population Prospects and Rapid Demographic Changes in the First Quarter of the Twenty-first Century in Latin America and the Caribbean - https://repositorio.cepal.org/server/api/core/bitstreams/dc5... - 2024