When the contracts or task authorizations are let, it is actually the responsibility of the department—the technical authority, CBSA—to verify that the resources put forward have the credentials required to carry out the work. In terms of reviewing the résumés and the qualifications of the subcontractors and their resources, that work would have been conducted by CBSA. You would have to ask the CBSA what work they did to validate and review.
On November 9th, 2023. See this statement in context.