La Casa Pacifica was a mansion that was used by the President who was a Senator from what state?
La Casa Pacifica:  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. Richard Nixon:  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.
California