Leahy spoke about his original bill last year, saying it "provides enhanced privacy protections for American consumers by ... requiring that the government obtain a search warrant." Changes to the bill reflect concerns from law enforcement groups including the National District Attorneys' Association and the National Sheriffs' Association. Likewise, Associate Deputy Attorney General James Baker warned that requiring the government to obtain a warrant for viewing email could have an "adverse impact" on investigations.
ACLU lawyer Christopher Calabrese expressed concerns over the revised bill, making this statement to CNET: “We believe a warrant is the appropriate standard for any contents."
Leahy once criticized the FBI's efforts to create mandates for Internet providers to provide backdoors for law enforcement. However, he also authored the Communications Assistance for Law Enforcement Act and the Protect IP Act, both of which were opposed by Fourth Amendment activists.