Submit the application and nonrefundable processing fee, then follow the USCIS email instructions for Form I-140G and any supporting documents. Retain the payment records and a dated copy of the official terms; the official FAQ does not publish an EB-5-style source-of-funds requirement or a universal civil-document list.
Large payments are examined for origin whether or not they are investments
The official framework describes an application and nonrefundable processing fee, followed by USCIS instructions to complete Form I-140G with supporting documents, vetting, and then the gift on instruction. USCIS and the Department of State may request additional information, but the FAQ does not publish an EB-5 lawful-source standard or a universal list of civil and police documents.
Hypothetical example: a Sainte-Brigitte-de-Laval founder whose company-sale price was paid through escrow should retain the transaction and payment records and respond to the documents actually requested rather than presenting an EB-5 record as an automatic Gold Card requirement. Save a dated copy of the official page and FAQ and keep the payment confirmation.