NUCD-UMDP from 1991 to 1992. When it merged with Lakas Tao in 1992, he served as the member of the National Directorate. In 1992, Osmena ran for Congressman in Cebu's Sixth District but lost. In 1995, Osmeña was invited by President Fidel Ramos to join in the senatorial race under the Lakas-Laban ticket. He won in the elections and served his term as senator from 1995 to 2001. During that term he was asked to look for a new site of the Senate after the old Executive Building will be renovated for the National Museum. The Senate offices and session hall were transferred to the GSIS Building at the Financial Center in Pasay. In 1997, Osmeña bolted Lakas NUCD to be an independent senator. In 1998, he joined the Liberal Party. Osmeña succeeded Senator Edgardo J. Angara as Chair of the powerful Committee on Agriculture and Food and the Congressional Oversight Committee on Agricultural and Fisheries Modernization (COCAFM). As Chair, Osmeña tried to block the approval of the construction of the Casecnan and the San Roque dams having discovered gross discrepancies in the costs and benefits of the projects. It was Osmeña who pointed out that the government would be investing a ridiculous amount of more than P385,000 to irrigate an additional hectare of rice paddy. The expose led to the cancellation of the proposed Balog-Balog irrigation project. In 2001, Osmeña was one of the senators who voted in favor of opening the second bank envelope for the impeachment case filed against Joseph Estrada. The motion was outnumbered, and it led to the second EDSA People Power Revolution. He ran as independent for the position of Senator under the People Power Coalition. He won in the elections and served his second term as senator from 2001 to 2007. Right after Senator Aquilino Pimentel Jr. was replaced by Senator Franklin Drilon as Senate President, he joined Pimentel's party PDP–Laban. His mandate as senator for the second term expired in 2007. Running independent again in 2010 (although adopted by the Liberal Party and the Partido ng Masang Pilipino), Osmeña refused to participate in the sorties of his adoptive parties and opted instead to campaign all by himself. He graced radio programs and television interviews. Running on a shoe-string budget, Osmeña did not have the volume of posters and billboards of his opponents. He had television advertisements that to him would be more