Recognizes the Grand River Bands of Ottawa Indians of Michigan as a federally recognized tribe, makes the Tribe and its members eligible for federal services and benefits available to other federally recognized tribes, and directs the Department of the Interior to take specified lands in certain Michigan counties into trust for the benefit of the Tribe. The law requires the Tribe to submit and maintain an official membership roll within 18 months and preserves the Tribe’s preexisting legal and equitable claims unless the Act expressly changes them.