Catherine Crump (@CatherineNCrump) s a Staff Attorney with the ACLU's Speech, Privacy and Technology Project. She specializes in free speech and privacy litigation, particularly regarding the impact of new technologies on First and Fourth Amendment rights. She is lead counsel in the ACLU's challenge to the government's suspicionless searches of laptops at the international border, and is litigating a series of cases challenging the government's claim it can track the location of people's cell phones without a warrant.