The USA still has a lot of high end manufacturing going on. There is no “used to”.
Sure, but it's seemingly doing less and less. "Value Added by Industry: Manufacturing as a Percentage of GDP" has been going downwards for a long long time, here is the last twenty years: https://fred.stlouisfed.org/series/VAPGDPMA
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Sure, but it's seemingly doing less and less. "Value Added by Industry: Manufacturing as a Percentage of GDP" has been going downwards for a long long time, here is the last twenty years: https://fred.stlouisfed.org/series/VAPGDPMA