WIGBERTO E. TAÑADA and ANNA DOMINIQUE COSETENG, as members of the Philippine Senate and as taxpayers; GREGORIO ANDOLANA and JOKER ARROYO as members of the House of Representatives and as taxpayers; NICANOR P. PERLAS and HORACIO R. MORALES, both as taxpayers; CIVIL LIBERTIES UNION, NATIONAL ECONOMIC PROTECTIONISM ASSOCIATION, CENTER FOR ALTERNATIVE DEVELOPMENT INITIATIVES, LIKAS-KAYANG KAUNLARAN FOUNDATION, INC., PHILIPPINE RURAL RECONSTRUCTION MOVEMENT, DEMOKRATIKONG KILUSAN NG MAGBUBUKID NG PILIPINAS, INC., and PHILIPPINE PEASANT INSTITUTE, in representation of various taxpayers and as non-governmental organizations, petitioners, vs. EDGARDO ANGARA, ALBERTO ROMULO, LETICIA RAMOS-SHAHANI, HEHERSON ALVAREZ, AGAPITO AQUINO, RODOLFO BIAZON, NEPTALI GONZALES, ERNESTO HERRERA, JOSE LINA, GLORIA. MACAPAGAL-ARROYO, ORLANDO MERCADO, BLAS OPLE, JOHN OSMEÑA, SANTANINA RASUL, RAMON REVILLA, RAUL ROCO, FRANCISCO TATAD and FREDDIE WEBB, in their respective capacities as members of the Philippine Senate who concurred in the ratification by the President of the Philippines of the Agreement Establishing the World Trade Organization; SALVADOR ENRIQUEZ, in his capacity as Secretary of Budget and Management; CARIDAD VALDEHUESA, in her capacity as National Treasurer; RIZALINO NAVARRO, in his capacity as Secretary of Trade and Industry; ROBERTO SEBASTIAN, in his capacity as Secretary of Agriculture; ROBERTO DE OCAMPO, in his capacity as Secretary of Finance; ROBERTO ROMULO, in his capacity as Secretary of Foreign Affairs; and TEOFISTO T. GUINGONA, in his capacity as Executive Secretary, respondents. PANGANIBAN, J.:
The emergence on January 1, 1995 of the World Trade Organization, abetted by the membership thereto of the vast majority of countries has revolutionized international business and economic relations amongst states. It has irreversibly propelled the world towards trade liberalization and economic globalization. Liberalization,