On Friday, the nation's highest court heard arguments on whether to uphold or block a law that could effectively ban TikTok​ in the U.S. The bill, signed

Congress says the popular video app poses a looming threat to the nation’s security because of its Chinese owner. What the justices decide could determine if the app is shut down.

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.