Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
US-Peru TPA signed 12 April 2006 (final Toledo/Bush cooperation). Peruvian Congress approved 28 June 2006. US Congress approved 4 December 2007 (Pelosi-era labour/environment amendments). In force 1 February 2009 under García. Phased tariff elimination + services/IP/investment chapters.
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.