Fiscal profligacy combined with the 1973 oil shock to exacerbate inflation and upset the balance of payments. Moreover, President Echeverría's leftist rhetoric and actions—such as abetting illegal land seizures by peasants—eroded investor confidence and alienated the private sector. The balance of payments disequilibrium became unmanageable as capital flight intensified, forcing the government in 1976 to devalue the peso by 58 percent. The action ended Mexico's twenty-year fixed exchange rate. Mexico accepted an IMF adjustment program and received financial backing from the United States. According to a 2017 study, "Key US and Mexican officials recognized that an IMF program of currency devaluation and austerity would probably fail in its stated objective of reducing Mexico's balance of payments deficit. Nevertheless, US Treasury and Federal Reserve officials, fearing that a Mexican default might lead to bank failures and subsequent global financial crisis, intervened to an unprecedented degree in the negotiations between the IMF and Mexico. The United States offered direct financial support and worked through diplomatic channels to insist that Mexico accept an IMF adjustment program, as a way of bailing out US banks. Mexican president Luis Echeverría's administration consented to IMF adjustment because officials perceived it as the least politically costly option among a range of alternatives."