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.

TikTok reportedly will shut down the app in the U.S. unless the Supreme Court halts a law banning the app unless ByteDance divests its stake.

Justices did not issue a ruling in the closely watched case over a potential ban, dialing up intrigue over the app’s fate.