In September 1951, the FBI notified the General Accounting Office of evidence Moss had been a member of the Communist Party in the mid-1940s, but at that time the army did not reopen the case. This evidence came from
Mary Stalcup Markward, who, working as an informant for the FBI, had joined the Communist Party from 1943 to 1949. Markward held such positions as membership director and treasurer for the party. She reported regularly to the FBI, gave them copies of party documents, membership lists, and detailed accounts of meetings and activities. In February 1954, Markward testified before the
House Un-American Activities Committee. Although she could not identify Moss personally, she testified that she had seen Annie Lee Moss's name and address on the Communist Party's membership rolls in 1944. At this point, Moss came to Senator
Joseph McCarthy's attention. McCarthy, in his capacity as chairman of the
Permanent Subcommittee on Investigations, was looking into charges of Communist infiltration of the army, specifically at the Army Signal Corps laboratories at
Fort Monmouth. This was incorrect, as the Army pointed out: Moss handled only unreadable, encrypted messages, and had no access to the Pentagon
code room. Cohn's examination of Moss quickly ran into difficulty. After he noted that a "Communist activist" named Rob Hall was known to have visited Moss's home, it was pointed out (by
Robert F. Kennedy, then the minority counsel for the committee) that two Rob Halls were in Washington: one was a known Communist who was white, and the other was a union organizer who was African American. Moss said that the Rob Hall she knew was "a man of about my complexion". As the hearing proceeded, it became clear that both the senators and the spectators were favoring Moss over Cohn and McCarthy. When Cohn asserted that he had corroboration of Markward's testimony from a confidential source, Senator
John McClellan rebuked him for alluding to evidence he was not actually presenting. As had happened several times already, loud applause erupted from the spectators. Senator
Stuart Symington then suggested that, as with Rob Hall, the case against Moss might be a matter of mistaken identity. Moss immediately agreed, saying three women named Annie Lee Moss were in Washington, DC. Symington said, "I may be sticking my neck out and I may be wrong, but I've been listening to you testify this afternoon and I think you're telling the truth." The public's response to both shows was highly favorable, and because of them Murrow is widely credited with contributing to the eventual downfall of McCarthy. Support for Moss and criticism of McCarthy was widespread. In one of the more famous quotations from the McCarthy era,
John Crosby wrote in the
New York Herald Tribune, "The American People fought a revolution to defend, among other things, the right of Annie Lee Moss to earn a living, and Senator McCarthy now decided she has no such right." ==Aftermath of the hearing==