	He ran for congressman in 2004 and won against Jeffrey Sescon Uy and represented the 1st District of Cavite to the 13th Congress of the Philippines. He was re-elected in the 2007 elections. During the 14th Congress, he was chairman of the House Committee on Science and Technology. He was also co-chairman of the Joint Congressional Committee on Science and Technology and Engineering with Sen. Edgardo Angara.