; and (B) the billing address associated with such credit card is located in the United States or, in the case of a purchase made by an individual who is a United States citizen living outside of the United States, the individual provides the television or radio broadcast station, provider of cable or satellite television, or online platform with the United States mailing address the individual uses for voter registration purposes. (3) Definitions (A) Online platform For purposes of this subsection, 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; (III) a national legislative issue of public importance; or (IV) any State or local ballot initiative or referendum. .