The U.S. Supreme Court on Friday will hold a hearing on the ban of TikTok, which carries implications on the global marketplace, technology, freedom of speech and national security.

TikTok and ByteDance, as well as some users who post content on the app, have challenged a law that would compel the sale of the social media platform by Jan. 19 or ban it in the United States. The law was passed by Congress with strong bipartisan support last year and signed by outgoing Democratic President Joe Biden,

The justices will review a law that would effectively shut down TikTok in the United States this month unless the company divests from Chinese ownership.

The justices are set to hear arguments over a federal law requiring the China-based social-media app to shut down or find new owners by Jan. 19.

On Boston Globe Today, media reporter Aidan Ryan discusses the implications if the nation’s highest court upholds the law to ban the app.