; (iii) to participate at the Financial Stability Board of The Group of Twenty and to join with other members from the United States including on matters related to insurance; and (iv) to participate with the United States delegation to the Organization for Economic Cooperation and Development and observe and participate at the Insurance and Private Pensions Committee. (4) Limitations on participation in supervisory colleges The Office may not engage in any activities that it is not specifically authorized to engage in under this section or any other provision of law, including participation in any supervisory college or other meetings or fora for cooperation and communication between the involved insurance supervisors established for the fundamental purpose of facilitating the effectiveness of supervision of entities which belong to an insurance group. (k) Scope The authority of the Office as specified and limited in this section shall extend to all lines of insurance except— (1) health insurance, as determined by the Secretary in coordination with the Secretary of Health and Human Services based on section 2791 of the Public Health Service Act ( 42 U.S.C. 300gg-91 ); (2) long-term care insurance, except long-term care insurance that is included with life or annuity insurance components, as determined by the Secretary in coordination with the Secretary of Health and Human Services, and in the case of long-term care insurance that is included with such components, the Secretary shall coordinate with the Secretary of Health and Human Services in performing the functions of the Office