If your H2-A worker candidate is put on "administrative review," it means that their application requires further scrutiny before a decision can be made. Administrative review is a security clearance process that is conducted by the U.S. Department of State and other federal agencies to ensure that individuals seeking entry to the U.S. do not pose a threat to national security or public safety.
The administrative review process can take several weeks or even months to complete, and it may involve additional interviews, document requests, and background checks. During this time, your H2-A worker candidate may be unable to travel to the U.S. or begin work as scheduled.
It's important to note that administrative review is not the same as a denial, and it does not necessarily mean that your worker candidate will be unable to obtain an H2-A visa. However, it can be a frustrating and stressful process for both you and your worker candidate, and it may be helpful to consult with an experienced immigration attorney to help navigate the administrative review process and ensure the best possible outcome.