is the only unit in ADX where inmates secure themselves in their own cells, can walk freely in their range, and associate with other inmates. From there, inmates will typically be transferred to the supermax step-down unit in USP Florence High. The Bureau of Prisons allowed the media to take a guided tour of USP ADX Florence on September 14, 2007. Attending reporters remarked on "an astonishing and eerie quiet" within the prison, as well as a sense of safety due to the rigorous security measures. 60 Minutes producer Henry Schuster said: "A few minutes inside that cell and two hours inside Supermax were enough to remind me why I left high school a year early. The walls close in very fast." The prison has received far less criticism than comparable facilities at the state level (such as California's Pelican Bay State Prison) which tend to suffer from over-population, low staff-to-inmate ratios, and security issues. Jamie Fellner of Human Rights Watch said after a tour of the facility in 1998, "The Bureau of Prisons has taken a harsh punitive model and implemented it as well as anybody I know." Controversies In 2012, eleven inmates filed a federal class-action suit against the Bureau of Prisons in Cunningham v. Federal Bureau of Prisons. The suit alleged chronic abuse and failure to properly diagnose prisoners who are seriously mentally ill. At the time of the lawsuit, at least six inmates had allegedly died by suicide; a seventh did so after the original lawsuit was filed, and an amended filing added him to the case. Critics claim that the use of extended confinement in solitary cells adversely affects prisoners' mental health; numerous studies support this conclusion. settlement negotiations were underway with the help of a federal magistrate. Some changes have already been made by the Bureau of Prisons. Prisoners held in Unit H are subject to special administrative measures that prevent them from communicating with journalists or privately with their own lawyers or family members. In 2020, a British magistrate refused to extradite Julian Assange to the United States on espionage charges in part because he would possibly be subjected to solitary confinement and special administrative measures at ADX. On July 7, 2021, the High Court of Justice for England and Wales agreed to allow the United States to appeal this decision with the understanding that Assange "will not be subject to SAMs or