Each employee organization that seeks certification as an exclusive representative shall file with the Board: a copy of the employee organization’s governing documents that: give individual members the right to participate in activities of the organization; require periodic elections by secret ballot that are conducted with recognized safeguards to ensure the equal rights of all members to nominate, seek office, and vote in the elections; and direct full and accurate accounting of all income and expenses using standard accounting methods; and a certification that the employee organization accepts members without regard to any characteristic listed in § 22–201(d) of this title.