What is a primary criterion during the inspection of an alien?

The primary criterion during the inspection of an alien is the purpose of their visit as per their visa. This is crucial because the visa issued to an individual outlines the specific reason for their entry into the country, such as tourism, business, study, or other designated categories. Inspectors evaluate if the individual adheres to the terms and limitations of their visa category upon arrival.

Understanding why this criterion is prioritized is essential for maintaining the integrity of immigration laws. If an individual enters the country for a purpose inconsistent with their visa, it can lead to potential violations and complications regarding their stay. Therefore, confirming that an alien’s stated purpose aligns with the conditions of their visa is a key aspect of the inspection process. This ensures not only compliance with immigration statutes but also helps in upholding national security and public policy.

Contextually, while other factors may be reviewed (such as criminal background or travel history), they serve to supplement the understanding of the individual's overall eligibility and intentions rather than serving as the main basis for initial entry evaluation.