Apple Inc. and Google removed TikTok from their mobile app stores in the US as required by a law that took effect Sunday, after the social media company’s legal challenges failed to head off the measure passed last year to address national security concerns.

With President-elect Trump adding uncertainty around whether a TikTok ban will go into effect, the focus is now turning to companies like Google and Apple.

First launched in the United States in 2018, the app quickly became the most downloaded social and entertainment app in the world. By 2020, when Americans were looking for ways to