Prohibits an executive agency from: (1) entering into a contract for the procurement of goods or services with any person or entity unless that person or entity has certified that the person or entity, and each of its officers, employees, and agents, have not violated the Securities Exchange Act of 1934 or the Foreign Corrupt Practices Act of 1977, or any comparable law of other countries; or (2) allowing any contractor awarded a contract by the agency to enter into a subcontract (at any tier) with any person or entity that has not made such certification.