(3)(i) Require the contractor to obtain a certification from each subcontractor, prior to award of a subcontract, if any portion of the subcontract—

(A) Is for supplies, other than COTS items (see 2.101), to be acquired outside the United States, or services to be performed outside the United States; and

(B) The estimated value exceeds $500,000.

(ii) The certification must state that—

(A) The subcontractor has implemented a compliance plan; and

(B) After having conducted due diligence, either—

(1) To the best of the subcontractor’s knowledge and belief, neither it nor any of its agents, subcontractors, or their agents, has engaged in any such activities; or

(2) If abuses relating to any of the prohibited activities identified in 52.222-50(b) have been found, the subcontractor has taken the appropriate remedial and referral actions;