FTA: But he also authored the 1994 Communications Assistance for Law Enforcement Act, which is still looming over Web companies, and the reviled Protect IP Act. An article in The New Republic concluded Leahy's work on the Patriot Act "appears to have made the bill less protective of civil liberties." Leahy had introduced significant portions of the Patriot Act under the name Enhancement of Privacy and Public Safety in Cyberspace Act (PDF) a year earlier.
He's far from a consistent supporter of Civil Liberties. Surely we shouldn't demonize him, but clearly could use some education and encouragement to do the right thing.