Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
Sector-specific licensing regimes, concentration / quota allocation, state-controlled entry (energy, telecoms, healthcare, banking).
Targeted industrial and sectoral subsidies (renewable energy, chip manufacturing, agriculture, green hydrogen, etc).
The 2018 Section 301 China tariffs, imposed by USTR after the March 2018 finding under the Trade Act of 1974 that China engaged in unreasonable IP-related practices, applied 25% tariffs in three rounds — List 1 (USD 34 billion, July 2018), List 2 (USD 16 billion, August 2018), List 3 (USD 200 billion at 10% rising to 25%, September 2018-May 2019) — covering most US imports from China. China retaliated proportionally. The intended effect was to coerce changes in Chinese IP and industrial-policy practices, eventually settling in the January 2020 Phase One agreement on agricultural and energy purchase commitments.
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.