Last July the D.C. Circuit Court of Appeals ruled that the Transportation Security Administration must do a “notice‐and‐comment” rulemaking on its policy of sending passengers through Advanced Imaging Technology machines (aka “body‐scanners” or “strip‐search machines”) and putting people who refuse the machines through a prison‐style pat‐down. The TSA is supposed to publish its policy in the Federal Register, take comments from the public, and issue a final rule that responds to public input. It has been a year since that ruling, and TSA hasn’t even started the process. John Mueller discusses the TSA and risk analysis at a Cato Capitol Hill briefing.