djsina2,
Thank you for the link. In reading the link, it is speaking to "duty" (Custom Duty) considerations, which per, my understanding, is different from tariffs. The link also is speaking to American Goods Return (AGR) , and discusses goods made in the United States.
Though I did not specifically indicate in my recent post question, I was thinking of goods purchased in the USA , but manufactured offshore and requiring warranty/repair service by the manufacturer location. The "duty" discussion in the link did indeed mention repair. It is possible that tariff considerations may adopt similar guidelines. Repair under warranty was not specifically discussed. A perspective on this could be that warranty was part of original cost of sale, but not knowledgable if that is how such is viewed under duty and/or tariff consideration for offshore warranty.
I suspect if needed, we should inquire directly with US Customs and Border Protection for clarification. I think it may be wise to do so in writing to get a written response, though how long that could take to get written response could be problematic. We could also communicate directly with our dealer(s) and manufacturer, but very possibly they will not have certainty.