Question: La Casa Pacifica was a mansion that was used by the President who was a Senator from what state?

Context paragraphs:
Casa Rosada: La Casa Rosada (] , ) is the executive mansion and office of the President of Argentina.  The palatial mansion is known officially as "Casa de Gobierno", ("House of Government" or "Government House").  Normally, the President lives at the Quinta de Olivos, the official residence of the President of Argentina, which is located in Olivos, Buenos Aires Province.  The characteristic color of the Casa Rosada is baby pink, and is considered one of the most emblematic buildings in Buenos Aires.  The building also houses a museum, which contains objects relating to former presidents of Argentina.  It has been declared a National Historic Monument of Argentina.

Route nationale 22: The Route nationale 22 (RN22) is a highway in southern France, connecting l'Hospitalet-près-l'Andorre to Pas de la Casa in the Principality of Andorra.  On the French side of the border at Pas de la Casa, the RN22 also connects to the Envalira Tunnel (Catalan: Túnel d'Envalira), which is an alternative route into Andorra avoiding the Envalira Pass (Catalan: Port d'Envalira).

The Horror Show: The Horror Show (also released as House III: The Horror Show and La Casa 7 or La Casa III) is a 1989 supernatural-slasher horror film starring Lance Henriksen and Brion James, produced by Sean S. Cunningham and directed by James Isaac, from a screenplay by Leslie Bohem.

La Casa Pacifica: La Casa Pacifica (Spanish for "The Pacific House"; translated also as "The House of Peace") is a classic California beachfront mansion located in the gated community of Cottons Point Estates/Cypress Shores in the casual South Orange County beach town of San Clemente, California, and overlooks the Pacific Ocean from its blufftop position.  This estate is also known as President Richard Nixon's Western White House, used while living and working outside of the official presidential residence, the White House in Washington D.C.

Tequendama Falls Museum: The Tequendama Falls Museum of Biodiversity and Culture (Spanish: "Casa Museo Salto de Tequendama Biodiversidad y Cultura") is a museum and mansion in San Antonio del Tequendama, Colombia.  The museum overlooks Tequendama Falls on the Bogotá River.  Before renovation, the building was an abandoned hotel, known as the Tequendama Falls Hotel ("La Casa del Salto del Tequendama").

Richard Nixon: Richard Milhous Nixon (January 9, 1913 – April 22, 1994) was the 37th President of the United States from 1969 until 1974, when he resigned from office, the only U.S. president to do so.  He had previously served as the 36th Vice President of the United States from 1953 to 1961, and prior to that as a U.S. Representative and also Senator from California.

La Casa Azul: La Casa Azul (English: "The Blue House") is a Spanish indie pop band that combines many of the qualities of 1960s American pop bands like the Beach Boys and 1970s European disco-pop acts like ABBA with clean, clear production reminiscent of Shibuya-kei.  This distinctive sound was created by singer and producer Guille Milkyway, who also writes the band's songs.  La Casa Azul release their records on the indie-pop label Elefant.

House II: The Second Story: House II: The Second Story (also released as La Casa Di Helen or informally as La Casa 6) is a 1987 American comedy horror film.  While it is a sequel to the 1986 film "House", "House II" does not involve the storyline and characters from the first film, and is a new supernatural comedy, with a tone even lighter than the original film's.

Beyond Darkness: Beyond Darkness (Italian: La Casa 5, also known as Horror House II) is a 1990 Italian horror film directed by Claudio Fragasso.  It was written by Fragasso and screenwriter and wife Rossella Drudi and produced by Joe D'Amato.  The La Casa films (III, IV and V) in Italy were all marketed as sequels of a sort to the American films "The Evil Dead" and "Evil Dead II", which were released in Italy as "La Casa" and "La Casa 2" respectively.

Íñigo Fernández de Velasco, 4th Duke of Frías: Íñigo Fernández de Velasco, 4th Duke of Frías, Grandee of Spain, (in full, Spanish: "Don Íñigo Fernández de Velasco y Girón, cuarto duque de Frías, segundo marqués de Berlanga, sexto conde de Haro, segundo conde de Castilnovo, Condestable de Castilla, mayorazgo y señor de la Casa de Velasco, señor de la Casa y Estado de Tovar, Camarero mayor de Felipe II" ), (  1520 – 1585), was a Spanish nobleman.

Supporting paragraphs: La Casa Pacifica Richard Nixon
Answer: California