As the Supreme Court prepares to consider the constitutionality of new laws restricting content moderation at large social media sites, a number of groups have filed “friend-of-the-court” briefs encouraging the justices to strike down the legislation on First Amendment grounds.

The briefs came in support of two industry trade associations that are challenging Texas and Florida statutes passed by Republican-led legislatures to stop perceived censorship of conservative views by social media platforms. The constitutionality of the novel legislation, which restricts the circumstances under which platforms like X, Facebook and YouTube can remove content and users, produced split rulings by two federal appeals courts in the proceedings below.