Maybe I'm missing it, but it doesn't seem obvious if the parts they're using were also manufactured in the US? Which, if they're not, makes sourcing them still an issue if global supply chains were to break down for example.
Scroll a little bit down and you'll see the country of origin for the parts. Most are of US origin.
Most of the stuff in that product listing is trivial stuff to produce. The PCB/PCBA entries can basically all be ignored, and all the ICs on those PCBs can basically be assumed to be made in China, except for the NXP i.MX8M which is made in Korea
For more info, see: https://source.puri.sm/Librem5/community-wiki/-/wikis/Freque...