From Center for Constitutional Rights:

Synopsis

Blum v. Holder is a federal lawsuit challenging the Animal Enterprise Terrorism Act (AETA) as an unconstitutional infringement on free speech. The plaintiffs are five longtime animal rights activists whose advocacy work has been chilled due to fear of being prosecuted as a terrorist under the AETA.

Pushed through Congress by a powerful lobby of pharmaceutical corporations and groups like the Fur Commission USA and the National Cattlemen’s Beef Association, the AETA is an unconstitutional law because it criminalizes a broad swath of protected First Amendment activities and is so unclear as to fail to give people notice of whether or not their conduct is lawful.

Read more at www.ccrjustice.org/ourcases/Blum