By MARIO CASAYURAN, CZARINA ONG KI Following the call of Vice President Leni Robredo to investigate the unprecedented flooding in Cagayan Valley, opposition Senator Francis “Kiko” N. Pangilinan on Tuesday said he would file a Senate resolution to probe typhoon “Ulysses’’-induced flooding that has already claimed 24 lives in the region. As former chairman of the National Irrigation Administration […]