Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
P.L. 107-56 of 26 October 2001 (45 days after 9/11). Expanded FISA surveillance, Section 215 business-records orders, National Security Letters, Section 206 roving wiretaps, Section 213 sneak-and-peek warrants; Title III anti-money-laundering; removal of pre-9/11 intelligence/criminal FISA wall. Sunsetting provisions extended repeatedly; partially reformed by USA FREEDOM Act 2015.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.