The main "former agent" Giuliani was talking about was James Kallstrom — super Trump fan, Clinton hater and Giuliani BFF. Wayne Barrett reported in the Daily Beast that Kallstrom had been ginning up anger among active-duty FBI agents over the Clinton emails for months. After the Republican convention in the summer of 2016, Giuliani went on CNN to complain about Comey's decision not to prosecute Clinton, saying, “The decision perplexes me. It perplexes Jim Kallstrom, who worked for him. It perplexes numerous FBI agents who talk to me all the time. And it embarrasses some FBI agents.”