As far as the issue with foreign made goods, the issue is with materials and holding up the same quality as the initial batch.
I, and others that I work with have had these experience first hand.
When parts are farmed out to unaccountable factories and machine shops in far away lands that do not put their name on the products and parts they make and you have no way to audit the manufacturing process or apply pressure to the management, the specified materials are often substituted for whatever is available and/or cheaper. The specs are not held as tight as they should due to worn machines, worn bits or even worn-out operators. If you are making a whole part overseas, the faceless factory often makes an overrun of your parts using materials billed to you that they then sell outside of your control. Your IP and designs are also now in the hands of people that have no controls over who they sell it to, and no legal penalties against them when they do it.
This is compounded when you buy finished assemblies from the faceless factory and even worse when you buy complete products already boxed and don't even handle them or do any appreciable QC to them before shipping to customers.
At Boeing, my previous employer, on the Space Station contract, we had numerous issues with our suppliers using Chinese (Korean, Taiwanese or Hong Kong) and South American (Chile, Argentina, El Salvador, Brazil) parts. At Vorshalg, one of our partners had a massive recall this year due to his overseas supplier not following the correct procedure to make his parts.
Our experience has led to our insistence that the parts with OUR name on them are machined in the US, handled by us for QC, then plated or coated locally, QC'd again, assembled in-house while also checking quality and then another final QC before being packaged and shipped. When we receive non-Vorshalg parts from our partners, we QC them in house, add any additional modifications the customer has requested and package them ourselves before shipping.
If our IP is sold illegally, we have recourse against those that sold it. We don't have three month delays getting parts made or end up rejecting entire shipments after they arrive due to materials or dimensions, and in the case where that could happen, we have recourse against the company that did it. We have close relationships with our machinists, platers, coaters and anodizers. We buy important hardware from the companies that manufacture it to keep from purchasing counterfeit fasteners and bearings. Often built to our custom specifications for materials, coatings and dimensions.
What we, our customers, and any other manufacturer gets from follow these steps is a product that is built as designed every time. A product that goes together correctly. Is repairable years later with parts from a different production run and provides strength and longevity as it was originally designed.