This checklist may be used to prepare for and respond to a site visit from the Fraud Detection and National Security Directorate (FDNS) of the US Citizenship and Immigration Services (USCIS), which is designed to verify that petitioners and beneficiaries are following the terms and conditions of their visa petitions.
Business visitors from Malawi and Zambia (and potentially other countries as well) may be required to post bonds as high as $15,000 to come to the United States.