The Supreme Court heard TikTok’s challenge to the ban-or-sale law to consider whether it violates the First Amendment rights of of users and platform owners.

The U.S. Supreme Court heard oral arguments Friday on whether the law banning TikTok is unconstitutional and violates the First Amendment rights of the 170 million Americans who use the social media platform.

The law that could ban TikTok is coming before the Supreme Court on Friday, with the justices largely holding the app’s fate in their hands. The popular social media platform says the law violates the First Amendment and should be struck down.