Who was Secretary of State during the Nixon administration?

Chilean Socialist presidential candidate Salvador Allende was elected by a narrow plurality in 1970, causing serious concern in Washington due to his openly Marxist and pro-Cuban politics. While the Nixon administration initially considered authorizing the CIA to organize a military coup that would prevent Allende's inauguration and presumably call new elections, the plan was aborted because the administration doubted any of the willing factions had a chance. The extent of Kissinger's involvement in or support of these plans is unknown. US–Chilean relations remained frosty during Salvador Allende's tenure; following the complete nationalization of the partially US-owned copper mines and the Chilean subsidiary of the US-based ITT, as well as other Chilean businesses, the US implemented partial economic sanctions, claiming that the Chilean government had greatly undervalued fair compensation for the nationalization by subtracting what it deemed "excess profits." The CIA provided funding for the mass anti-government strikes in 1972 and 1973; during this period, Kissinger made several controversial statements regarding Chile's government, stating that "the issues are much too important for the Chilean voters to be left to decide for themselves" and "I don't see why we need to stand by and watch a country go communist due to the irresponsibility of its people." These remarks sparked outrage among many commentators, who considered them patronizing and disparaging of Chile's sovereignty. In September 1973, Allende was either assassinated or committed suicide during a military coup launched by Army Commander-in-Chief Augusto Pinochet, who became President. During a later visit to Chile, Kissinger told Pinochet that the US was concerned about the junta's human rights violations but was sympathetic to its anti-communist stance. US–Chilean relations significantly improved and remained warm until Democratic challenger Jimmy Carter defeated President Gerald Ford in 1976 and implemented a tough stance against any state that violated human rights, regardless of its friendliness toward America.