<div> <div> <div> <div> <p>The Infrastructure Concentration Index (ICI) is the first longitudinal composite indicator measuring U.S. federal government control over critical data infrastructure from 2002 to 2025. The index aggregates six dimensions from primary government sources: FBI biometric records, FinCEN Suspicious Activity Reports, DHS border biometric coverage, FISA Section 702 targets, FERC-jurisdictional energy load, and federal high-performance computing budget.</p> </div> </div> <div> <div> <p>Three structural phases emerge. A step-change of +34 points in 2004-05 was driven by simultaneous IDENT biometric rollout and MISO energy market activation. An eight-year plateau at ICI 40-55 (2005-12) reflects fiscal sequestration and energy network saturation. An acceleration phase raised the ICI from 56 to 90 between 2013 and 2024, with all six dimensions growing simultaneously across institutionally independent agencies.</p> </div> </div> <div> <div> <p>The central finding is convergence: after 2016, concentration grows regardless of administration ideology. A structural break at 2012.8 is identified (Chow F=4.5, p&lt;0.01 on the six-dimension composite; sensitivity analysis excluding FISA data yields F=2.1-2.4, p=0.08-0.12). The ICI is a within-country longitudinal ordinal measure -- ICI=90 means 90% of maximum observed values in the 2002-2025 sample, not an absolute threshold.</p> </div> </div> <div> <div> All data points carry explicit epistemic labels (verified/derived/speculative). The ICI measures structural capacity for coordination, not demonstrated surveillance activity. </div> </div> </div> </div>