 After the 1949 convictions , prosecutors waited until the constitutional issues were settled by the Supreme Court before they tried additional leaders of the CPUSA . When the 1951 Dennis decision upholding the convictions was announced , prosecutors initiated indictments of 132 additional CPUSA leaders , called " second string " or " second @-@ tier " defendants . The second @-@ tier defendants were prosecuted in three waves : 1951 , 1954 , and 1956 . Their trials were held in over a dozen cities , including Los Angeles ( 15 CPUSA defendants , including Dorothy Healey , leader of the California branch of the CPUSA ) , New York ( 21 defendants , including National Committee members Claudia Jones and Elizabeth Gurley Flynn ) , Honolulu , Pittsburgh , Philadelphia , Cleveland , Baltimore , Seattle , Detroit , St. Louis , Denver , Boston , Puerto Rico , and New Haven . 
