; and (3) by striking and shall certify the results thereof and inserting to be conducted as soon as practicable but no earlier than 20 business days after the Board directs that an election be held. The Board shall certify the results of the election after it has ruled on each pre-election issue not resolved before the election and any additional issue pertaining to the conduct or results of the election . 3. Appropriate units for collective bargaining Section 9(b) of the National Labor Relations Act ( 29 U.S.C. 159(b) ) is amended— (1) by redesignating paragraphs (1) through (3) as subparagraphs (A) through (C), respectively; (2) by striking The Board shall decide and all that follows through or subdivision thereof: and inserting the following: (1) In each case, prior to an election, the Board shall determine, in order to assure to employees the fullest freedom in exercising the rights guaranteed by this Act, the unit appropriate for the purposes of collective bargaining. Unless otherwise stated in this Act, and excluding any bargaining unit determination promulgated through rulemaking before August 26, 2011, the unit appropriate for purposes of collective bargaining shall consist of employees that share a sufficient community of interest. In determining whether employees share a sufficient community of interest, the Board shall consider— (A) similarity of wages, benefits, and working conditions; (B) similarity of skills and training; (C) centrality of management and common supervision; (D) extent of interchange and frequency of contact between employees; (E) integration of the work flow and interrelationship of the production process; (F) the consistency of the unit with the employer’s organizational structure; (G) similarity of job functions and work