“ The head of an executive agency may exempt a particular project, contract, subcontract, grant, or cooperative agreement from the requirements of any or all of the provisions of sections 1 and 2 of this order, if the agency head finds that special circumstances require an exemption in order to avert an imminent threat to public health or safety or to serve the national security. ”

“ Require any bidder, offeror, contractor or subcontractor to enter into, adhere to, or enforce any agreement that requires its employees, as a condition of employment, to: (i) become members of or affiliated with a labor organization; or (ii) pay dues or fees to a labor organization, over an employee's objection, in excess of the employee's share of labor organization costs relating to collective bargaining, contract administration, or grievance adjustment. ”

“ The heads of executive agencies shall, within 30 days of the date of issuance of this order, review all statutes under their jurisdiction that provide authority to issue grants or enter into cooperative agreements for construction projects and identify any statute that provides authority to condition a grant award or cooperative agreement on the recipient's or party's agreement that neither bid specifications, project agreements, nor other controlling documents pertaining to the grant or cooperative agreement contain any of the elements specified in section 1 (a) (1) - (3) , above. ”