Immigration policy openness — work visas, family reunification, asylum processing, border enforcement posture.
Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Montenegro AD government terminated the manifestação de interesse regularisation mechanism — a de-facto post-entry path to legal residency used by an estimated 300 000-400 000 migrants under the Costa PS governments. Decree-Law approved 3 June 2024 and notified 4 June. Channel kept open only for CPLP (Portuguese-speaking countries) nationals under the 2021 Mobility Agreement; other nationalities required to use consular pre-entry visa channels. AIMA (Agência para a Integração, Migrações e Asilo) tasked with triaging the ~400 000 backlog by end-2025 (target not met). Policy sequenced to pre-empt Chega parliamentary initiatives on the same topic but drew opposition from BE, PCP, Livre, and parts of PS. Cited by government as response to housing-pressure salience and labour-market absorption capacity; cited by critics as policy drift under populist-right parliamentary leverage.
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.