Question: Ellis Island, the gateway for over 12 million immigrants to the United States as the nation's busiest immigrant inspection station and where social worker Ludmila Foxlee was employed from 1920 to 1937, was made part of which National Monument in 1965?
Sentence (from "Statue of Liberty National Monument"): The monument is managed by the National Park Service as part of the National Parks of New York Harbor office.
Relevant evidence: No