With arguments looming next week in the Texas Supreme Court in a case of three Jane Doe plaintiffs suing Facebook and Instagram over allegations that they were teen victims of sex trafficking facilitated by the platforms, a slate of high-powered lawyers has been augmented by even more legal firepower in the form of amicus briefs.

The justices are scheduled on Feb. 24 to hear an appeal of two Houston judges’ refusals to declare the Facebook defendants protected from state claims by the Communications Decency Act, which holds that operators of Internet services are not “publishers” of third-party content contained on their websites and thus not liable for its content.