Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Investigation opened 1995 by Fiscalía (Chief Prosecutor Alfonso Valdivieso) into ~$6M in Cali Cartel funds channelled to Samper's 1994 campaign via treasurer Santiago Medina and campaign manager Fernando Botero Zea. "Narcocassettes" tapes; multiple cabinet members and legislators prosecuted; Medina and Botero convicted. Chamber of Representatives voted 111-43 on 12 June 1996 to close the case against Samper personally. US decertified Colombia as narcotics-cooperation partner 1 March 1996; Samper's US visa revoked July 1996. Most severe LatAm democratic campaign-finance scandal pre-Lava Jato.
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.