This chapter investigates the factors that led the Nixon administration to pursue covert regime change against Salvador Allende, the democratically elected socialist President of Chile in the early 1970s. Initial attempts at preventing Allende from coming to power, including a military coup, failed. Although subsequent covert destabilization efforts contributed to Allende’s eventual downfall in 1973 at the hands of Augusto Pinochet and his co-conspirators, U.S. decision makers were not directly involved. They did, however, have advance warning. One of the primary reasons for the use of secrecy in this case was America’s commitment to nonintervention and the attendant credibility and legitimacy costs associated with brazenly violating it. Although U.S. officials never considered overtly invading Chile, they were reticent to pursue less dramatic overt policies aimed at overthrowing Allende, including sanctions and other hardline policies, unless they could secure legal cover.