The group alleges that TikTok violated state laws by falsely claiming its platform is safe for young people.
The lawsuits seek to stop those practices and impose financial penalties on the social media company.
That case is still pending, but Meta has since rolled outsweeping safety updatesdesigned to protect teens.
TikTok has denied those allegations.
But if the government gets its way, it could require the removal of TikTok from US app stores.
