Make the right move.

Mapping Multilevel Diplomacy

The International Relations of

U.S. Cities and States

Updated July 24, 2024

Go to Multilevel Diplomacy Map
About This Project

Solving local problems requires a global mindset. We built a map to visualize multilevel U.S. connections with the world.

The safety, health, and prosperity of American communities increasingly depend on how their leaders—mayors, governors, and other local officials—connect with the world. We believe that visualizing these connections will help local leaders make more informed decisions, with a global lens.

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Multilevel Diplomacy Map

This map details how subnational diplomacy is happening, where it is concentrated, and the local priorities it advances.

Across scores of American cities and all 50 states, the map captures the formal and informal engagements developed by city and state government leaders—such as mayors, governors, their senior staff, and public agencies—with foreign governments since 2018. The map includes:

  • Partnerships involving foreign governments (cities, regions, and countries), especially those formalized via signed commitments, memoranda, or legislative actions;
  • Significant meetings with foreign governments, including trade missions and high-level delegations; and
  • Membership in international networks.
This Map Is Made For
Local U.S. actors, such as city, county, and state leaders

Local actors may use this tool to understand, promote, and prioritize their international engagement. They may also find value in identifying where connections already exist as they consider new partners and geographic priorities. Leaders may benefit from using this data to reinforce collective action with neighboring communities, including joint missions, and merge disparate and sometimes competing efforts.

The federal government, including the U.S. Department of State

The federal government will benefit from knowledge of the multilevel exchanges and agreements connecting the U.S. with the world. Information on how and where U.S. local authorities are engaging internationally may inform constructive partnerships and dialogue across levels of government. U.S. diplomatic missions can use this tool to explore U.S. subnational relations in their region. The map may also reveal disparities in subnational relations within the U.S., helping prioritize support to underserved U.S. locations that will benefit from greater diplomatic capacity.

Other actors, including universities, researchers, networks, resettlement agencies, diaspora leaders, and civic and business leaders

Other actors may benefit from understanding what issues, cities, states, and countries drive U.S. subnational diplomacy. As the field of subnational diplomacy research grows, this map provides new evidence that can support future research and inform policy and business development.

If you are a city or state official, please help us expand the map by submitting additional data.

Not all data on partnerships and meetings is publicly available, so the map conveys a selective snapshot of subnational relations. Truman is regularly updating the map with additional data. We also welcome your feedback and suggestions.

The data displayed in the map is collected through three tracks:

1
Manual Data Collection

Most of the data was collected from publicly available sources, such as governmental websites, news outlets, and social media pages, between October 2023 and April 2024.

2
Survey Data

To collect data that may not be publicly available, the Truman Center partnered with the U.S. Conference of Mayors on a survey sent to 3,000 city leaders, including about 1,000 mayors, allowing them to submit data on their city’s international engagements.

3
Voluntary Submission

U.S. city, county, and state governments are invited to submit their data at any time.

Acknowledgements

The Truman Center would like to acknowledge the efforts of those who made this work possible.

At the Truman Center, Lois Ramilo, Amarpreet Kaur, Rana Unal, Eden Zaborowski, and Chris Aboukhaled played a central role in collecting data and shaping the methodology. Jon Temin, Suzy Wagner, Karlee Rockstroh, and Mick Wieland provided valuable support in producing the map. Max Bouchet leads this project.

Jenny Lin designed the dashboard and maps. Cathy Richards provided data architecture and process expertise. Vishesh Jain developed the Tableau dashboard.

Support for this project was provided by a grant from Carnegie Corporation of New York. The statements made and views expressed are solely the responsibility of the authors.

The Truman Center would also like to thank Luis Renta, Maryum Saifee, Erin Bromaghim, Angela Kim, Tony Pipa, Ben Leffel, Ian Klaus, and Emerita Torres for their feedback, and the U.S. Conference of Mayors for their partnership on a joint survey which contributed data to the map.