What is the appropriate response when an inspection shows that requirements are not met and not known?

When an inspection reveals that the requirements are not met and the specifics of how they are not met are unknown, the most appropriate response is to refuse to certify. This action is crucial because certification indicates that all criteria have been satisfied, ensuring that the product meets phytosanitary standards. If the requirements are not met and the details are unclear, proceeding with certification could lead to potential risks, such as the introduction of pests or diseases into a new area.

In this context, refusing certification serves as a protective measure for agricultural health and safety, maintaining the integrity of the certifications issued by USDA. It is essential for the agency to uphold strict standards to prevent any harm to domestic crops and ecosystems. Other options, like seeking clarification or issuing a warning, may not adequately address the immediate risk associated with non-compliance in terms of phytosanitary requirements.