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YELLOWSTONE NATIONAL PARK, Wyo. (AP) — Yellowstone National Park sees plenty of foreign visitors who come to see its unique natural features.

But this week, 43 foreigners will be coming to the park to become U.S. citizens during a naturalization ceremony at Mammoth Hot Springs.

The immigrants come from 20 different countries and currently live in Wyoming, Montana, Idaho and Utah.

U.S. Magistrate Judge Mark L. Carman of the U.S. District Court for the District of Wyoming will preside over the ceremony on Wednesday.