Keep the actual official terms alongside any genuine private sponsorship agreement. Identify what each document says without treating the private agreement as a government rule.
Clarify the unresolved allocation
If employer and employee have not agreed who bears a private cost, state that uncertainty. Immigration eligibility does not decide every employment-contract question.
Collect identity and family information, a precise description of the proposal being considered, and any open questions about eligibility, funding, and the current instructions, then follow the official directions for the USCIS forms and supporting evidence that follow. Dated copies of the official program page and FAQ as they read when each decision was made, all payment records and confirmations, the identity and background material supplied for vetting, and any written correspondence about the underlying classification. Organize identity documents, name-change records, marriage or birth certificates for relatives, and evidence explaining the lawful origin of any funds that the official process requires. Build a dated review file around dated official instructions, identity records, civil-status documents, payment-source records, payer authority, and proof of the completed transfer. Passports come from a passport authority, civil certificates from a registry, employment and business records from the organisations that hold them, and certified translations from a translator who attests to their own competence.