🗂️ What This Study Shows

This article argues that the foreign-policy issues emphasized by individual embassies are shaped by where diplomats get their information. American Chambers of Commerce (AmChams) — private interest groups of U.S. firms operating in host states — emerged across the 20th and early 21st centuries as key information providers on commercial topics such as tax, trade, and investment regulations.

📚 Evidence and Sources

• Novel text data drawn from approximately 1,500 oral history interviews with former U.S. diplomats.
• Historical mapping of AmCham proliferation across host countries over the 20th and early 21st centuries.

🧭 How the Analysis Is Designed

• Exploits the institutional structure of diplomatic rotation to generate variation in diplomats' exposure to active AmCham branches.
• Uses that variation, paired with the interview text data, to assess whether exposure to AmChams predicts attention to commercial issues in bilateral diplomacy.

📈 Key Findings

• Diplomats who were exposed to active AmCham branches paid significantly greater attention to commercial issues.
• The effect is concentrated on topics of private-sector interest, including tax, trade, and investment regulation.
• Results reveal a concrete channel through which organized business interests can shape foreign-policy agendas.

⚖️ Why It Matters

These findings identify a new avenue of interest-group influence on foreign policy, help explain the rise of pro-business international agreements in recent decades, and add to the growing literature on diplomacy within the international political economy by showing how local commercial actors can redirect embassy priorities.