Assume you are a quality control engineer, supervising the completion of a product whose specification includes using only US$-$made parts. However, at a very late stage you notice that one of your sub$-$contractors has supplied you with a part having foreign$-$made bolts in it $-$ but these are not very noticeable and would function identically to US$-$made bolts. Your customer urgently needs delivery of the finished product. What should you do$?$

Put all your efforts into finding legal loopholes in the original specifications, or in the way they were negotiated, to avoid your company appearing to have violated the specifications.

Say nothing and deliver the product with the foreign bolts included, hoping this fact will not be noticed by the customer.

Find $($or$,$ if necessary, invent$)$ some roughly equivalent violation of the contract or specifications for which the customer $($rather than your company$)$ is responsible $-$ then tell them you will ignore their violation if they ignore your company's violation.

Tell the customer about the problem, and let them decide what they wish you to do next.