Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Immigration policy openness — work visas, family reunification, asylum processing, border enforcement posture.
Loi du 22 décembre 1999 establishing a one-off regularisation procedure for irregular migrants resident in Belgium, processing some 32,000 applications and granting residence to roughly 50,000 individuals. The campaign opened 10 January-31 January 2000 and was administered by an ad hoc commission, with criteria including long residence, family ties, prolonged asylum proceedings, and humanitarian grounds.
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.