The Supreme Court on Friday was divided over the constitutionality of a federal law that would require social-media giant TikTok to shut down in the United States unless its Chinese parent company can sell it by Jan.

A pending law would pressure China-based ByteDance to sell TikTok for the social media platform to be hosted by U.S. app stores.

Unless the Supreme Court intervenes, Google, Apple and internet providers won't be allowed to make TikTok available after Sunday, Jan. 19.