As someone that spent years in manufacturing, I hate to diss our fellow Americans, but our manufacturing labor force is TERRIBLE - relatively speaking. Watch the Netflix documentary American Factory, yes, chinese workers are BETTER. Now American workers have advantages such as thinking outside the box. BUT, when it comes to making something uniform and to the spec, I trust chinese worker over American worker ANYDAY. BTW, Japanese workers are on the same scale as chinese, if not better. Something with asians and discipline.
If you can, wait for confirmation on when the chinese made model 3s will arrive. Worst case scenario, you can get a vin assigned and you'll know immediately if it's made in China or made in USA.
Most products, I prefer made in USA vs made in China due to our superior quality control. BUT, Tesla, I'd take China made Model 3 ANYDAY.