the DOJ legal justification was a "manipulation of the law" similar to other "overreaching" and "twisted interpretations" in recent times. Leahy and Kennedy also asserted that Gonzales had "admitted" at a press conference on December 19, 2005, that the Administration did not seek to amend FISA to authorize the NSA spying program because it was advised that "it was not something we could likely get." (However, as noted below under "Proposed Amendments to FISA", Gonzales made clear that what he actually said was that such an amendment was "not something [they] could likely get" without disclosing the nature of the program and operational limitations and that it was believed that such disclosure would be damaging to national security.) Leahy and Kennedy asserted that the procedures adopted for the NSA program, specifically the 45-day reapproval cycle was "not good enough" because the review group were executive branch appointees. Finally, they concluded that Congressional and Judicial oversight were fundamental and should not be unilaterally discarded. In February 2008, the Bush administration backed a new version of FISA that would grant telecom companies retroactive immunity from lawsuits stemming from surveillance. On March 14, the House passed a bill that did not grant such immunity. Anonymity networks Edward Snowden copied and leaked thousands of classified NSA documents to journalists. The information revealed the access of some federal agencies to the public's online identity and led to wider use anonymizing technologies. In late 2013, soon after Snowden's leaks, it was loosely calculated that encrypted browsing software, such as Tor, I2P and Freenet had "combined to more than double in size ... and approximately 1,050,000 total machines 'legitimately' use the networks on a daily basis, amounting to an anonymous population that is about 0.011 percent of all machines currently connected to the Internet." Given that these tools are designed to protect the identity and privacy of their users, an exact calculation of the growth of the anonymous population cannot be accurately rendered, but all estimates predict rapid growth. These networks were accused of supporting illegal activity. They can be used for the illicit trade of drugs, guns and pornography. However, Tor executive director Roger Dingledine claimed that the "hidden services" represent only 2 percent of total traffic on Tor's network. This fact suggests that the large majority of those who use it do so in order to protect their normal browsing activity, an effort to protect