Washington — The Supreme Court on Friday upheld a new law that would lead to a ban of the social media platform TikTok, clearing the way for the widely popular app to be forced to shutter in the U.S. as soon as Sunday.

The company argued that the law, citing potential Chinese threats to the nation’s security, violated its First Amendment rights and those of its 170 million users.

The Supreme Court has upheld the federal law banning TikTok beginning Sunday unless it’s sold by its China-based parent company, holding the risk to national security posed by its ties to China overcomes concerns about limiting speech by the app or its 170 million users in the U.