G.R. No. 118295. May 2, 1997.*WIGBERTO E. TAADA 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

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