Question: Roberto Gil Zuarth served as private secretary to which Mexican president who is a member of the PAN party?

full_context: Document 1: National Action Party (Mexico): The National Action Party (Spanish: "Partido Acción Nacional" , PAN), founded in 1939, is one of the three main political parties in Mexico. Since the 1980s has been an important political party winning local, state, and national elections. In 2000, PAN candidate Vicente Fox was elected President for a six-year term; in 2006, PAN candidate Felipe Calderón succeeded Fox in presidency. During the period 2000-2012, both houses of the legislature had PAN pluralities, but the party did not have a majority in either house of the Congress. In the 2006 legislative elections the party won 207 out of 500 seats in the Chamber of Deputies and 52 out of 128 Senators. In the 2012 Legislative Elections, the PAN won 38 seats in the Senate, and 114 seats in the Chamber of Deputies.
Document 2: Roberto Iván Aguilar Gómez: Roberto Ivan Aguilar Gómez (born 19 May 1958 in La Paz, Bolivia) is an economist, former university official, politician, and Bolivia's Minister of Education since 2 June 2011. Aguilar served as docent, general secretary, and rector in the Universidad Mayor de San Andres in La Paz. In 2006, he was elected as a plurinominal member of the Bolivian Constituent Assembly for the Movement for Socialism and served as its vice president. In November 2008, he was appointed by Evo Morales as Minister of Education, succeeding Magdalena Cajías.
Document 3: Ernesto Zedillo: Ernesto Zedillo Ponce de León, GColIH (] ; born December 27, 1951) is a Mexican economist and politician. He served as President of Mexico from December 1, 1994 to November 30, 2000, as the last of the uninterrupted 70-year line of Mexican presidents from the Institutional Revolutionary Party (PRI). Since the ending of his term as president in 2000, Zedillo has been a leading voice on globalization, especially its impact on relations between developed and developing nations.
Document 4: Mel Martínez: Melquíades Rafael Martínez Ruiz, usually known as Mel Martínez (born October 23, 1946), is an American lobbyist and former politician who served as a United States Senator from Florida from 2005 to 2009 and as general chairman of the Republican Party from November 2006 until October 19, 2007. Previously, Martínez served as the 12th Secretary of Housing and Urban Development under President George W. Bush. Martínez is a Cuban-American and Roman Catholic. He announced he was resigning as general chairman of the Republican National Committee on October 19, 2007.
Document 5: Esteban Moctezuma: Esteban Moctezuma Barragán (born October 21, 1954 in Mexico City) is a Mexican politician affiliated with the Institutional Revolutionary Party (PRI). He is a former senator and served as secretary of social development and secretary of the interior in the cabinet of President Ernesto Zedillo Ponce de León. From that position, early in January 1995, he sponsored peace talks in Chiapas with the EZLN insurgents; later on, he was active in the San Andres Accords ("Los Acuerdos de San Andrés") to promote Constitutional Reforms on behalf of indigenous autonomy.
Document 6: Francisco Javier Ramírez Acuña: Francisco Javier Ramírez Acuña (Jamay, Jalisco, April 22, 1952) is a Mexican politician who belongs to the National Action Party. He has been Municipal President of Guadalajara, Governor of Jalisco from 2001 to 2006 and from December 1, 2006 to January 2008 he served as Secretary of the Interior in the cabinet of President Felipe Calderón.
Document 7: Miguel Ángel Mancera: Miguel Ángel Mancera Espinosa (] ; born January 16, 1966) is a Mexican lawyer and politician who works with the Party of the Democratic Revolution (PRD). He is the current Mayor of Mexico City. Mancera graduated from the Faculty of Law of the National Autonomous University of Mexico (UNAM) in 1989, and he was awarded the Gabino Barreda Medal two years later for being the best student of his class. He has a master's degree from the University of Barcelona and the Metropolitan Autonomous University and a Juris Doctor from the UNAM.
Document 8: Francisco Barrio: Francisco Javier Barrio Terrazas (born November 25, 1950) is a Mexican politician affiliated with the National Action Party (PAN). He is a former governor of Chihuahua and former secretary in the cabinet of President Vicente Fox.
Document 9: Felipe Calderón: Felipe de Jesús Calderón Hinojosa, GCB, R.E. (] ; born 18 August 1962) is a Mexican politician who served as President of Mexico from 1 December 2006, to 30 November 2012. He is a member of the National Action Party ("Partido Acción Nacional", PAN), one of the three major Mexican political parties.
Document 10: Mario Ernesto Dávila Aranda: Mario Ernesto de San Alberto Magno Dávila Aranda (born 16 January 1959) is a Mexican veterinarian and politician affiliated with the National Action Party. As of 2014 he served as Deputy of the LIX Legislature of the Mexican Congress representing Guanajuato.
Document 11: Francisco Lemus Muñoz: Francisco Isaías Lemus Muñoz Ledo (born 23 February 1961) is a Mexican politician affiliated with the National Action Party.In 2003 he was Deputy plurinominal Local PAN in Guanajuato LVIII Legislature . President of the Commission of Public Works and Urban Development ; Member of the Commission of Education, Culture and Publishing Affairs ; Member of the Committee on Environment and Ecology. As of 2014 he served as Deputy of the LIX Legislature of the Mexican Congress representing Guanajuato, 1991 candidate for alderman of the municipality of Apaseo El Grande, Guanajuato 1994 candidate for mayor of Apaseo El Grande, Guanajuato, PAN 1996 active members, 1997 PAN candidate of a local deputy Guanajuato, from 1997 to 2000 Secretary of organization of CDM PAN Apaseo el Grande, Guanajuato, from 1997 to 2002 Political Advisor in the CDM PAN Apaseo el Grande, Guanajuato, from 2001 to 2003 State Counsel in the CDE PAN in Leon, Guanajuato
Document 12: Francisco Javier Mayorga Castañeda: Francisco Javier Mayorga Castañeda (born on 17 April 1951) is a Mexican businessman and politician who serves as Secretary of Agriculture in the cabinet of President Felipe Calderón since 7 September 2009. He has previously served in the same post from 28 September 2005 to 30 November 2006 in the administration of President Vicente Fox.
Document 13: Leonardo Álvarez Romo: Leonardo Álvarez Romo (born 7 October 1972) is a Mexican politician affiliated with the Ecologist Green Party of Mexico. Former Mexican congressman in two occasions, he started his political career in 1994 at the campaign of the presidential candidate Luis Donaldo Colosio Murrieta, along with the actual Mexican Senator, Armando Ríos Peter. After the assassination of Colosio, he worked in the environmental NGO that he founded and called CAMBIOS (Changes) and continued his studies in Political Sciences and Public Administration. Later on, he was the personal assistance of the famous politician Manuel Camacho Solis, in the Center Democratic Party from 1997 to 2000. Then in November 2000 he affiliate to the Green Party of Mexico. From 2000 to 2003 he was the political adviser of the green legislators in the Mexican Senate, and then adviser of the President of the Green party of Mexico. Later on, he was postulated by his Party as Deputy of the LIX Legislature of the Mexican Congress as a plurinominal representative from 2003 to 2006. There as a congressman, he was President of the Special Commission for the Reform of the State, member of the Commissions of National Defense, Indigenous Affairs, Environmental Affairs, and Fishing Affairs. He reformed the Environmental Law to make the Army and the Navy of Mexico participate in the protection of the environment, also he left a profound study of the necessities of a Political Reform for Mexico. Then, from 2006 to 2009, he was Deputy of the House of Representatives of Mexico City. There he was Leader of the Greens, President of the Commission of Environmental Affairs, and in several occasions Chairman and Vice-chairman of the House of Representatives of Mexico City. He reformed the Law to create the Environmental Police, to prohibit the use of plastic bags in supermarkets and stores, and to create the Forest Firefighters. From 2004 to 2012 he was the Secretary of Foreign Affairs of the Green Party of Mexico. He was elected in Santiago, Chile, President of the Federation of Green Parties in the Americas for the term 2009-2011. At the moment he works in the Federal Government, at the Ministry of Environment and Natural Resources, with the position of General Director in matters of Indigenous, Legislative and NGO´s Affairs.
Document 14: Pact for Mexico: The Pact for Mexico is a national political agreement signed on December 2, 2012 in the Chapultepec Castle in Mexico City by the president of Mexico, Enrique Peña Nieto, as well as Gustavo Madero Muñoz, the president of the National Action Party; Cristina Díaz, the acting chair of the Institutional Revolutionary Party; and Jesús Zambrano Grijalva, chair of the Party of the Democratic Revolution. The Green Party of Mexico joined as a signatory to the agreement on January 28, 2013. The pact's framework is composed of 95 public policy proposals based on three guiding principles:
Document 15: Roberto Gil Zuarth: Roberto Gil Zuarth (born in Tuxtla Gutiérrez, Chiapas, 10 October 1977) is a Mexican politician affiliated with the PAN. He was Undersecretary of the Interior. He also served as Deputy between 2009 and 2011 during the 61st Legislature. He contended in 2010 for the presidency of the National Action Party against Gustavo Madero Muñoz. He was Private Secretary to Mexican President Felipe Calderón. He currently serves as Senator of the LXIII Legislature of the Mexican Congress. Since September 1, 2015 he is the President of the Mexican Senate.
ground_truth: Felipe Calderón