all functions of the Secretary of Health, Education, and Welfare and of the Department of Health, Education, and Welfare under the Rehabilitation Act of 1973 [
29 U.S.C. 701 et seq.], except that the provisions of this subparagraph shall not be construed to transfer to the Secretary the functions of the Secretary of Health, Education, and Welfare under sections 222 and 1615 of the Social Security Act [
42 U.S.C. 422 and 1382d];