; (2) the voluntary return of items by collectors, dealers, and other individuals and organizations that hold such items; (3) the elimination of illegal commerce in items in the United States and foreign markets; and (4) the repatriation to Indian Tribes and Native Hawaiian organizations of items that have been illegally removed or trafficked in violation of Federal law. (c) Agency and committee assistance (1) In general The agencies and committees described in paragraph (2) shall provide information and assistance to the working groups convened under subsection (a) upon request by the working groups. (2) Agencies and committees The agencies and committees described in this subsection are the following: (A) The Department of the Interior. (B) The Department of Justice. (C) The Department of Homeland Security. (D) The Department of State. (E) The Native American Graves Protection and Repatriation Review Committee established under section 8 of the Native American Graves Protection and Repatriation Act ( 25 U.S.C. 3006 ). (F) Any other relevant Federal agency. 10. U.S. Customs and Border Protection training The Secretary of Homeland Security, acting through the Commissioner of Customs and Border Protection, shall require all appropriate personnel of U.S. Customs and Border Protection to participate in training to identify covered items for purposes of this Act and the amendments made by this Act. 11. Interagency working group (a) In general The Secretary shall convene an interagency working group consisting of representatives from the Departments of Interior, Justice, State, and Homeland Security. (b) Goals The goals of the working group are to facilitate repatriation to Indian Tribes and Native Hawaiian organizations of items that have been illegally removed or trafficked in violation of Federal law; to protect such items still in Indian Tribes’ and Native Hawaiian organizations’ possession