Earlier quoted context omitted.
> Doing business with US manufacturers has become more and more difficult over time. Any thoughts on why?
In my experience, it's a combo of issues. US manufactures were the first to automate, so many of them are with 1st/2nd generation gear that is designed for high throughput operation and not around setup time. These machines can take several hours to change what they make. Also, manufactures have become jaded with new customers as they are constantly asking for them to move mountains for overseas pricing. Manufactures…
My experience overseas is more like fire off an email with an attachment and have perfect parts a few weeks later.
I believe this is changing though. There are some awesome short run PCB assembly services in the states now for instance.