The 2000 book "The Lion, the Fox, and the Eagle" by Carol Off, which devotes a third of its content to MacKenzie's role in Yugoslavia, claims that MacKenzie was willfully ignorant of the Bosnian political situation and was manipulated into being a vehicle of pro-Serb propaganda. In 1993, investigative reporter and Pulitzer Prize–winning journalist Roy Gutman accused Mackenzie of having two trips to Washington D.C., one to speak in front of the Heritage Foundation and the other to appear as an expert witness for the House of Representatives Armed Services Committee, funded by SERBNET, a Serbian-American lobbyist group. In a telephone interview with Gutman, MacKenzie responded, "It wouldn't surprise me if there was some Serbian involvement considering who initiated the contract; however I would be very disappointed if that were the case." The day after the interview, an article appeared in "Newsday" suggesting that MacKenzie was on the Serbian payroll. When MacKenzie confirmed the source of the funds was indeed SERBNET, he donated the entire fee to the Canadian Federation of Aids Research (CANFAR). However, UN officials ultimately criticised his "lack of judgment" in the matter.