No loan shall be made or equipment, facilities, or services furnished by the Administration under this chapter to any business enterprise unless the owners, partners, or officers of such business enterprise (1) certify to the Administration the names of any attorneys, agents, or other persons engaged by or on behalf of such business enterprise for the purpose of expediting applications made to the Administration for assistance of any sort, and the fees paid or to be paid to any such persons; (2) execute an agreement binding any such business enterprise for a period of two years after any assistance is rendered by the Administration to such business enterprise, to refrain from employing, tendering any office or employment to, or retaining for professional services, any person who, on the date such assistance or any part thereof was rendered, or within one year prior thereto, shall have served as an officer, attorney, agent, or employee of the Administration occupying a position or engaging in activities which the Administrati