sentences:  In 1946 Congress passed the Indian Claims Commission Act to provide a mechanism for hearing and resolving longstanding tribal land claims against the US government.Such cases led to the use of ethnologists both by Indian tribes and by the Justice Department, as cases were adjudicated.Between 1954 and 1963, Lurie worked frequently as a researcher and expert witness for tribal petitioners in cases brought before the United States Indian Claims Commission, including the Lower Kutenai (Ktunaxa), Lower Kalispel (Kalispel), and Quileute of the Pacific Northwest; and the Sac and Fox Nation, Winnebago (aka Ho-Chunk), Turtle Mountain Band of Chippewa Indians, and Eastern Potawatomi of the Upper Midwest.