Security of private property rights — formal recognition, expropriation risk, titling systems.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Financial-sector regulation — banking separation, capital requirements, cross-border activity rules, derivatives oversight.
FHFA placed Fannie Mae + Freddie Mac into conservatorship 7 Sep 2008 under Housing and Economic Recovery Act (HERA) of 30 Jul 2008. Treasury provided Senior Preferred Stock Purchase Agreement with initial USD 100bn each commitment (raised), common + preferred shareholders effectively wiped. Over 2008-2012 Treasury injected ~USD 187bn; GSEs returned >USD 300bn in dividends. Net worth sweep 2012 redirected GSE profits to Treasury — contested in Collins v Yellen.
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.