[220] International Covenant on Economic, Social and Cultural Rights. (ICESCR), adopted December 16, 1966, G.A. Res. 2200A (XXI), 21 U.S. GAOR Supp. (No. 16) at 49, U.N. Doc. A/6316 (1966), 993 U.N.T.S. 3, entered into force January 3, 1976.