 Calomiris was recruited by the FBI in 1942 and infiltrated the CPUSA , gaining access to a membership roster . She received a salary from the FBI during her seven years as an informant . Calomiris identified four of the defendants as members of the CPUSA and provided information about its organization . She testified that the CPUSA espoused violent revolution against the government , and that the CPUSA – acting on instructions from Moscow – had attempted to recruit members working in key war industries . 
