Kent Nishimura / Los Angeles Times via Getty Images
- TikTok is suing the US government over its new law that forces a sale or ban of the app.
- The company argued that the law violates the First-Amendment rights of its users.
- Experts said a legal fight weighing free speech against national-security interests is a coin toss.
TikTok promised to fight its ban in the US — and now the social-media giant has made it official.