 Chavez grew increasingly disillusioned with the CSO, believing that middle-class members were becoming increasingly dominant and were pushing its priorities and allocation of funds in directions he disapproved of; he for instance opposed the decision to hold the organization's 1957 convention in Fresco's Hacienda Hotel, arguing that its prices were prohibitive for poorer members.Amid the wider context of the Cold War and McCarthyite suspicions that leftist activism was a front for Marxist-Leninist groups, the Federal Bureau of Investigation (FBI) began monitoring Chavez and opened a file on him.At Alinsky's instigation, the United Packinghouse Workers of America (UPWA) paid $20,000 to the CSO for the latter to open a branch in Oxnard; Chavez became its organizer, working with the largely Mexican farm laborers.