ULAP's Sister City Integrity Initiative / May 2026
Sister-city and local cooperation instruments may be non-binding, but they can still shape access, expectations, data exposure, procurement proximity, and public-sector risk before any formal transaction is filed. This report maps 271 Philippine LGU sister-city and town-twinning records to show where partnerships sit, what remains undocumented, and when ceremonial cooperation begins to create market, labor, data, financial, or asset exposure.
Evolution of sister-city practice
The sequence shows how sister-city records moved from friendship and protocol files toward clause-bearing, sector-specific, and market-facing instruments. The administration view keeps partner-country shifts visible because the portfolio changes by both form and corridor.
Annual records with 3-year average
Source: scii_context_timeline_year_counts.csv. Bars show all dated records and records with operative or sector clauses; the line shows a trailing 3-year average.
Click a year for detail
Source: Complete_Agreement_List.csv, using date signed, effective date, or source-document date where available.
Sister-city process
The route follows a control logic: identify the file, check local authority, verify the counterpart, route sector triggers before implementation, disclose key terms, then monitor renewal or exit.
Portfolio shape
China, South Korea, the United States, and Japan account for 203 of 271 relationship-level records. The chart keeps the long tail visible because smaller clusters still matter for registry design.
Total corpus: 271 records
Source: Canonical Dataset Summary and local Complete_Agreement_List CSV.
Top corridor profiles
The record count is only the starting point. Each large corridor has a different operating profile, which is why the registry should route by sector, clause, and evidence need rather than by nationality alone.
Documentation visibility
Formal agreement present vs. not documented
55 of 271 records have confirmed operative agreement text.
Active relationships remain difficult to read without follow-through files
Implementation status is unclear in 214 records.
Progress records are the thinnest layer
Only 19 records show monitoring or progress evidence.
Market integrity
These indicators are routing signals for document recovery, sector review, public-private dialogue, and scorecards. They are not findings of misconduct, corruption, espionage, or national-security breach.
Records with visible trigger or review flag
Source: SCII Market-Integrity Computation, 271-record denominator.
Distribution of screening level
Moderate/high exposure requires sector routing, not accusation.
Country associations
Bias-corrected Cramer's V is largest for labor trigger status, LGU type, island group, and operative-text visibility. Instrument form is small and non-significant in the full partner-country test.
Bias-corrected Cramer's V
The association test shows partner-country patterns are more strongly linked to labor triggers, LGU type, island group, and operative-text visibility than to instrument form. The governance issue is functional and evidentiary, not just a matter of formal labels.
Source: scii_network_method_tests_canonical_20260528.csv.
Commercial orientation vs. exposure/safeguard sensitivity
This matrix is diagnostic, not a country ranking. It reads the whole portfolio first: the x-axis captures market-facing cooperation orientation, the y-axis captures exposure and safeguard sensitivity, and bubble size captures relationship-record count.
Source: country_presentation_filter_audit.csv. Bubble size reflects relationship-record count; x-axis is cooperation orientation and y-axis is exposure/safeguard sensitivity.
Anonymized case carousel
These examples are drawn from the report and the event-log comparison file used in the study. They are included to illustrate documentation needs and registry routing logic. Philippine counterpart names are anonymized.
Disclaimer: These anonymized notes are for documentation and routing design only. No allegation or finding of misconduct, illegality, corruption, coercion, espionage, procurement impropriety, bad faith, or noncompliance is made against any LGU, official, partner city, country, organization, or individual. Any contrary implication is expressly disclaimed.
Registry preview
This preview shows the operating logic behind a future SCII registry. Tick the partner, sector, and missing provisions; the page generates a draft routing tier, review path, and standard clauses that a public file should require before implementation.
Recommendation package
The current Section 10 makes the sister-city to project firewall the governing rule. The registry, one-page screen, sector routing, and model clauses are support tools: they make the firewall visible, tell the LGU when it has been triggered, and route activated functions to the office already authorized by law.
Bottom-line operating rule
Log baseline civic activity lightly; route triggered functions; deep-review only higher-sensitivity or evidence-deficient files; monitor conversion events; and pilot the administrative burden before national rollout.
Source: current SCII report, Section 10.1-10.11 recommendations and bottom-line operating rule.
Comparative scale
The comparison layer keeps two asymmetries separate: international fiscal scale from WOFI, and domestic Philippine LGU capacity from SRE income and expenditure data.
Dollars PPP per inhabitant, 2020
Source: official SNG-WOFI country profiles. U.S. row uses SNG total because the profile does not split state and local revenue.
2020-2024 means
Source: scii_sre_lgu_income_20260525 summary outputs.
Mean expenditure share, percent of current expenditure
Positive bars mean SCII LGUs spend a higher share than the national LGU mean.
PHP millions, 2020-2024
Ranking uses matched SCII LGUs in the SRE local finance panel.
Policy brief
A sister-city agreement is easy to sign and difficult to govern once the signing ceremony ends. The SCII portfolio maps 271 documented Philippine LGU sister-city and town-twinning records and finds that the core problem is not the existence of local cooperation itself, but the lack of post-signature visibility: many relationships show ceremony, listings, or activity without the operative text, implementation record, monitoring file, or downstream authority needed to test what actually followed.
The portfolio is small but concentrated in market-visible jurisdictions. Only 105 of the Philippines' 1,724 LGUs appear in the records, and four partner countries account for 203 of the 271 relationships, or 74.9 percent: China, South Korea, the United States, and Japan. These records are review flags, not findings of misconduct. They show where market access, technology and data, labor mobility, value flow, donations, public naming, or procurement-adjacent activity may arise before ordinary procurement, audit, labor, data-protection, and sector controls become visible.
The recommended control is to treat every sister-city, friendship-city, town-twinning, MOU, MOA, renewal, or side-letter instrument as a non-executing umbrella. It may record cooperation and intent, but it should not itself authorize spending, procurement, labor deployment, data sharing, asset acceptance, technology adoption, public-safety activity, or public messaging. Downstream action should proceed only through the Philippine legal instrument and agency route that the activated function already requires.