Allegations of bias
In a July 2013 interview, Senator and privacy advocate Ron Wyden described the FISC warrant process as "the most one-sided legal process in the United States". "I don't know of any other legal system or court that really doesn't highlight anything except one point of view", he said. Later in the interview he said Congress should seek to "diversify some of the thinking on the court".
Elizabeth Gotein, a co-director of the Liberty and National Security Program of the Brennan Center for Justice at the New York University School of Law, has criticized the court as being too compromised to be an impartial tribunal that oversees the work of the NSA and other U.S. intelligence activities. Since the court meets in secret, hears only the arguments of the government prior to deciding a case, and its rulings cannot be appealed or even reviewed by the public, she has argued that: "Like any other group that meets in secret behind closed doors with only one constituency appearing before them, they're subject to capture and bias."
A related bias of the court results from what critics such as Julian Sanchez, a scholar at the Cato Institute, have described as the near certainty of the polarization or groupthink of the judges of the court. Since all of the judges are appointed by the same person (the Chief Justice of the United States),
as of 2013 nearly all currently serving judges are of the same political party (the Republican Party), hear no opposing testimony and feel no pressure from colleagues or the public to moderate their rulings, group polarization is almost a certainty. "There's the real possibility that these judges become more extreme over time, even when they had only a mild bias to begin with", Sanchez said
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As of 2017, Chief Justice John Roberts has appointed all of the current judges, four of whom were nominated to their District Court judgeships by a Democratic President.