TikTok faced off with the U.S. government in federal court on Monday, arguing a law that could ban the platform in a few short months is unconstitutional while the Justice Department said it is needed to eliminate a national security risk posed by the popular social media company.

As the federal government's lawyer argued the short-form app posed a national security threat, TikTok and some of its users argued a potential ban is unconstitutional. Anupam Chander, professor of law and technology at Georgetown Law,

TikTok and its China-based parent company, ByteDance, are challenging a U.S. law that requires them to break ties or face a ban in the U.S. by mid-January NBC Universal, Inc. The U.S. government and TikTok will go head-to-head in federal court on Monday as ...