Since the the federal Electronic Communications Privacy Act (ECPA), which governs how law enforcement can access electronic data was signed in 1986, our society, country, and the Internet has changed enormously. There were no emails, cell phones or 4.8Tbps TransePacific Unity cables then. The law is static and outdated.
The Digital Due Process, a coalition of technology companies, civil rights organizations and academics seeking to update ECPA to provide privacy protections to new and emerging technologies has emerged out of need.
Official Google Blog: Our stand for digital due process