Newly released documents from the American Civil Liberties Union (ACLU) show warrantless surveillance of Americans’ electronic communications by federal law enforcement agencies through pen register and trap devices sharply increased. Notably, because of how easy it is for government to intercept communications, government now regularly exercises the authority to intercept “to” and “from” addresses of email messages, collect instant message conversation records and gather what the ACLU refers to as “non-content data associated with social networking identities.”