TikTok went offline in the United States Saturday night, less than two hours before a ban was slated to go into effect.

TikTok was not the only app that became unavailable for many U.S. users. The ban also impacts other Bytedance apps, like CapCut, Lempon8 and Gauth. Apple, in a statement on its website, said it’s “obligated to follow the laws in the jurisdictions where it operates,”

But the law’s seeming fragility, with an incoming president already scheming to unravel it, highlights something else just as clearly: How few tools American leaders have available to address the risks of online content.