; or (B) culturally, historically, or ar­chae­ol­o­gi­cal­ly significant objects, resources, patrimony, or other items that are affiliated with a Native American culture. 4. Voluntary return of tangible cultural heritage (a) Policy It shall be the policy of the United States to encourage the voluntary return of tangible cultural heritage to Indian tribes and Native Hawaiian organizations by collectors, dealers, and other individuals and non-Federal organizations that hold such heritage. (b) Liaison The Secretary and the Secretary of State shall each designate a liaison to facilitate the voluntary return of tangible cultural heritage. (c) Trainings and workshops The individuals listed in subsection (b) shall hold trainings and workshops for representatives of Indian tribes and Native Hawaiian organizations and collectors, dealers, and other individuals and non-Federal organizations regarding the voluntary return of tangible cultural heritage. (d) Referrals (1) In general The Secretary shall refer individuals and organizations to one or more Indian tribes or Native Hawaiian organizations with a likely cultural affiliation to tangible cultural heritage for the purpose of facilitating the voluntary return of tangible cultural heritage. (2) Referral representatives The Secretary shall compile a list of representatives from each Indian tribe and Native Hawaiian organization for purposes of referral under paragraph (1). (3) Consultation The Secretary shall consult with Indian tribes and Native Hawaiian organizations that possess unique expertise in their cultural heritage before making a referral under paragraph (1). (4) Third-party experts The Secretary may utilize knowledgeable experts from regional academic institutions and museums to aid in making determinations regarding to which Indian tribe or Native Hawaiian organization an individual or organization should be referred under paragraph (1). 5. Tribal working group (a) In general The Secretary shall convene a tribal working group consisting of representatives of