Yup, it’s called a brain drain and it’s why until recently America held a vice grip on groundbreaking research and its commercialization.
The people decided that this sucks and have spoken. Dear god, make America stupid again!
It's more complicated than this, The US has multiple challenge in its own domestic talent pipeline. In a world of finite slots for elite production and elite employment the US must own the outcome of allocating those slots internationally and the resulting under-employment of its domestic population.
Whether these slots should be finite or not is an independent problem, however for various reasons the slots are currently finite and potentially reducing in volume with income inequality.
are there any stats pointing to these students going to different schools? we know birth rates fell sharply starting ~2008 and have stayed low. [https://www.cdc.gov/nchs/data/vsrr/vsrr043.pdf]
Isn’t the brain drain people leaving their home countries to make money in the US?
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A brain drain means the intelligent population emigrates to other countries.
The narrative and data do not support Americans going abroad.
I think you're referring to a lack of competitive education for those coming outside of America and choosing Europe / China to study.
Historians looking back at this era are going to struggle to understand why we made the decisions we did.