; and (2) shall tailor the rules promulgated under paragraph (1), as appropriate, based on the size, dominance, and other attributes of particular digital platforms. 10. Systemically important digital platforms (a) Designation of SIDPs; rulemaking authority The Commission may— (1) designate systemically important digital platforms in accordance with this section; and (2) promulgate rules specific to systemically important digital platforms, consistent with the purposes of the Commission under section 4(b). (b) Mandatory criteria The Commission shall designate a digital platform a systemically important digital platform if the platform— (1) is open to the public on one side; (2) has significant engagement among users, which may take the form of private groups, public groups, and the sharing of posts visible to some or all users; (3) conducts business primarily at the interstate or international level, as opposed to the intrastate level; and (4) has operations with significant nationwide economic, social, or political impacts, as defined by the Commission for purposes of this paragraph through notice-and-comment rulemaking under section 553 of title 5, United States Code, which may include— (A) the ability of the platform to significantly shape the national dissemination of news; (B) the ability of the platform to cause a person significant, immediate, and demonstrable economic, social, or political harm by exclusion from the platform; (C) the market power of the platform; (D) the number of unique daily users of the platform; and (E) the dependence of business users, especially small business users (including entrepreneurs from communities of color and underserved populations), on the platform to reach customers. (c) Annual and other reports (1) Authority to require reports The Commission may— (A) require annual reports from systemically important digital platforms subject to this Act, and from persons directly or indirectly controlling or controlled by, or under direct or indirect control with, any such platform