Question: What organization associated with Mexico-Peru relations is headquartered in United States capital Washington D.C.?

Context paragraphs:
Height of Buildings Act of 1910: The Height of Buildings Act of 1910 was an Act of Congress passed by the 61st United States Congress on June 1, 1910 to limit the height of buildings in Washington, D.C. The original act was passed on March 1, 1899 when the 55th United States Congress approved the Height of Buildings Act of 1899.  The original act restricted the heights of any type of building in the United States capital city of Washington, D.C., to be no higher than 110 ft .  In 1910, the 61st United States Congress enacted a new height restriction law limiting building heights to 130 ft , or the width of the right-of-way of the street or avenue on which a building fronts, whichever is shorter.  That is the main law presented by this act.

Organization of American States: The Organization of American States (Spanish: "Organización de los Estados Americanos" , Portuguese: "Organização dos Estados Americanos" , French: "Organisation des États américains" ), or the OAS or OEA, is a continental organization founded on 30 April 1948, for the purposes of regional solidarity and cooperation among its member states.  Headquartered in the United States capital Washington, D.C., the OAS's members are the 35 independent states of the Americas.

Revolutionary Student Brigade: The Revolutionary Student Brigade (RSB) was a Marxist-Leninist student organization active in the 1970s in the United States.  The RSB was founded at a conference on June 15–17, 1974 which was attended by about 450 students from 80 campuses.  Its predecessor was the Attica Brigade, which was one grouping that can be traced to the Students for a Democratic Society (SDS) split in 1969.  The RSB was the student organization associated with the Revolutionary Union, which became the Revolutionary Communist Party in 1975.

Mexico–Peru relations: Mexican-Peruvian relations refers to the historical and current bilateral relationship between the United Mexican States and the Republic of Peru.  Both nations are members of the Asia-Pacific Economic Cooperation, Community of Latin American and Caribbean States, Organization of Ibero-American States, Organization of American States, Pacific Alliance and the United Nations.

Capitol View (building): Capitol View is a high-rise building located in the United States capital of Washington, D.C..  Construction of the building began in 2006 and was completed in 2007.  The building's architectural style is modern, which the building's material is made of granite.  The building was developed by the architect company, Shalom Baranes Associates.  The building was constructed by Clark Construction.  The building is estimated to have cost US$37,000,000 to construct.  The building was awarded the 2007 Washington Building Congress Craftsmanship Award for Sitework.

The Hermetic Order of the Golden Dawn, Inc.: The Hermetic Order of the Golden Dawn, Inc. is a 501(c) non-profit organization associated with a modern magical Order of the same name.  While bearing the same name as the historical Hermetic Order of the Golden Dawn (1888-1908), the modern Order does not have direct descent or institutional lineage from the original Order.  According to author Gerald Suster, this Order is notable for having the only working Golden Dawn temple in the United States at the end of the 1970s, making it the oldest continuously operating Golden Dawn offshoot in the US.

Washington Gas Building: Washington Gas Building is a high-rise building located in the United States capital of Washington, D.C..  It rises to 152 ft with approximately 15 floors.  The building's construction was completed in 1941.  The architects of the building were Jarrett C. White and Leon Chatelain, Jr.

Executive Tower (Washington, D.C.): Executive Tower (Washington, D.C.) is a high-rise office building located in the United States capital of Washington, D.C. Its construction was completed in 2001.  It rises to a height of 153 ft , having 12 floors.  The architect of the building was Hellmuth, Obata & Kassabaum.

Pan-Pacific Trade Union Secretariat: The Pan-Pacific Trade Union Secretariat (PPTUS) was a regional subdivision of the Red International of Labor Unions (RILU, commonly known as the Profintern), the trade union organization associated with the Communist International.  Established in Hankow, China in May 1927, the PPTUS attempted to coordinate communist activity in the organized labor movement of China and the Pacific basin, including particularly Japan, Korea, Indonesia, the Philippines, Australia, and the United States.

Oath Keepers: Oath Keepers is a far-right, anti-government American organization associated with the patriot and militia movements.  The group describes itself as a non-partisan association of current and former military, police, and first responders, who pledge to fulfill the oath that all military and police take in order to "defend the Constitution against all enemies, foreign and domestic."  It encourages members – some of whom are current and former U.S. military and law enforcement officers – not to obey orders which they believe would violate the United States Constitution.  The organization claims a membership of 35,000.

Supporting paragraphs: Mexico–Peru relations Organization of American States
Answer: Organization of American States