; or (ii) a person who is acting as an agent on behalf of such a foreign principal. . (2) Definitions Section 319 of such Act ( 52 U.S.C. 30121 ) is amended by adding at the end the following new subsection: (c) Definitions As used in this section: (1) Online platform (A) In general The term online platform means any public-facing website, web application, or digital application (including a social network, ad network, or search engine) which— (i) sells qualified political advertisements; and (ii) has 50,000,000 or more unique monthly United States visitors or users for a majority of months during the preceding 12 months. (B) Qualified political advertisement For purposes of subparagraph (A), the term qualified political advertisement means any advertisement (including search engine marketing, display advertisements, video advertisements, native advertisements, and sponsorships) that— (i) is made by or on behalf of a candidate; or (ii) communicates a message relating to any political matter of national importance, including— (I) a candidate; (II) any election to Federal office; or (III) a national legislative issue of public importance. (2) Paid internet or paid digital communication The term paid internet or paid digital communication means a communication which is placed or promoted for a fee on any website, web application, or digital application (including a social network, ad network, or search engine). . (b) Criminal penalty Section 309(d)(1) of the Federal Election Campaign Act of 1971 ( 52 U.S.C. 30109(d)(1) ) is amended by adding at the end the following new subparagraph: (E) In the case of a knowing and willful violation of section 321 that involves a government of a foreign country (or an agent of such a government)— (i) subparagraph (A)(i) shall apply without regard to the amount of the contribution or expenditure involved