Documents meeting at least three of the regulatory criteria, such as a professional licence, ten years of full-time experience, a salary showing exceptional ability, membership in professional associations, and recognition from peers or industry bodies, plus proof the ability benefits the United States.
Build the criteria file before the fee, not after
Exceptional ability in business is assessed against a list of criteria, and an applicant must satisfy at least three, after which the officer weighs the whole record. For a contractor the likely candidates are the journeyman certificate as evidence of licensure, employment and tax records showing more than ten years in the trade, financial statements showing remuneration well above the norm, membership in trade associations, and any awards, published articles or industry roles that show recognition. A national-interest waiver may remove the job-offer requirement in EB-2 but requires its own showing.
Gather these into a single file with an index before the processing fee is paid, and have the adviser assess it honestly. If the file falls short on three criteria, the Gold Card's gift does not fill the gap. Keep the family's civil documents and passports ready as well, since every eligible family member is separately priced under the official terms.
Hypothetical example: A modular-furniture designer is considering the program after building a profitable Canadian company. First collect the evidence for a viable EB-1 or EB-2 classification and ask an adviser to identify the strongest category before any payment decision. The award records, contracts, tax materials and expert evidence settle that threshold; business success by itself may not.
The proposal requires a payment made by the applicant to the U.S. government. It is not a conventional visa and does not turn an incomplete underlying immigrant classification into an approvable case.
Keep dated copies of the current official terms because document requirements may change.