Block Foreign-Funded Political Ads Act

This bill requires major online platforms (with 50+ million monthly US visitors) and broadcasters to verify that political ads are not purchased by foreign nationals. It mandates checking credit card details and US billing addresses for buyers, and directly affects platforms like social media and ad networks that sell "qualified political advertisements" (including candidate ads or messages about federal elections or national issues). Platforms must make "reasonable efforts" to prevent foreign purchases, such as asking buyers if they're foreign nationals or confirming US billing addresses. The law targets online political advertising specifically, not general content or non-political ads.