Ease of hiring/firing, collective-bargaining scope, minimum wage rigidity, temporary/permanent contract regulation.
Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
ADA (Pub. L. 101-336), signed 26 July 1990 by Bush on South Lawn before 3,000 attendees. Prohibited discrimination against persons with disabilities in employment (Title I, 15+ employees), state and local government services (Title II), public accommodations (Title III), and telecommunications (Title IV). Required reasonable accommodation and accessibility retrofits. Enforced by EEOC and DOJ. Modelled on Civil Rights Act 1964 structure.
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.