Targeted industrial and sectoral subsidies (renewable energy, chip manufacturing, agriculture, green hydrogen, etc).
Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
The Inflation Reduction Act of 2022 (Pub. L. 117-169) authorized roughly $369 billion in clean-energy and climate spending, including production and investment tax credits for wind, solar, batteries, electric vehicles, hydrogen, and carbon capture, with domestic-content and assembled-in-North-America conditions. The law also imposed a 15% corporate alternative minimum tax on book income, a 1% excise on stock buybacks, and authorized Medicare drug-price negotiation, becoming the largest U.S. climate-policy package to date.
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.