SmarterEveryDay has a whole series[1] on manufacturing that covers how the US is losing/lost the ability to create tooling. I believe the "Smarter Scrubber" episode[2] is the one that explicitly talks about how not only has the US lost manufacturing capacity but it also lost the ability to spin up manufacturing. The tool and die episode also touches on it[3].

[1] https://youtube.com/playlist?list=PLjHf9jaFs8XUZ3azgCNyawIQ5... [2] https://youtu.be/GDzBE6vz5r0 [3] https://youtu.be/3ZTGwcHQfLY