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. Chairman Karl Mundt ruled that Cohn's comments be stricken from the record. McClellan responded: