A TikTok ban might be one step closer to reality even if there are still some lingering doubts about whether a federal law will really go into effect on January 19.

The Supreme Court seemed likely to uphold a new law that could force TikTok to shut down in the U.S., with conservative and liberal justices alike expressing skepticism about the legal challenge.

On Friday, TikTok will get the chance to argue its case before the Supreme Court, which is deciding whether the government can ban the platform if it doesn’t sever ties with China. With the app’s fate hanging in the balance,