Interests Section of Iran in the United States
The Interests Section of the Islamic Republic of Iran in the United States (Persian: دفتر حفاظت منافع جمهوری اسلامی ایران در آمریکا) is a part of the Pakistani Embassy in Washington, D.C., and is the de facto diplomatic and consular representation of the Islamic Republic of Iran in the United States. The Iranian Interest Section has several departments, including a passport department, civil registration, student section, legal, and visa section.
Source: Wikipedia — Interests Section of Iran in the United States (CC BY-SA 4.0)