General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Size of cash and near-cash transfer programmes (unemployment benefits, means-tested assistance, universal child benefits). Architecturally distinct from forced-saving schemes — see condition welfare_architecture.
Financial-sector regulation — banking separation, capital requirements, cross-border activity rules, derivatives oversight.
Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
The Affordable Care Act of 2010 (Pub. L. 111-148) extended Medicaid eligibility to all non-elderly adults at or below 138% of the federal poverty line, with the federal government initially funding 100% of the expansion population (later phasing to 90%). Following NFIB v. Sebelius (2012), which made expansion optional for states, adoption proceeded state by state, ultimately covering tens of millions of additional low-income adults previously ineligible under traditional categorical Medicaid criteria.
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.