Where are you getting PCBs assembled in the USA at small volume?
Cyber City Circuits does small scale assembly in the US and seem like a cool company (ran into them from the Datasheet Digest podcast they put out). But yeah obviously they aren’t going to be able to match a $35 PCBA JLCPCB prototyping order.
Electronic manufacturing in the US definitely exists. It also is low quality and 5x to 10x the cost of China.
An assembled board that costed us $825/unit in the US (and frequently had errors) costs $130/unit from China and they nailed it every time (probably because they machine QC rather than human QC). It's really not even close. Same goes for machined parts - drastically cheaper and higher quality from China.
I was in Montana once and stopped in to see a small PCB line. They were doing F22 and F35 PCBs.
Small USA PCB is everywhere.
And that’s the ones I can think of within a couple hours of each other.