that some ATF agents discussed using Fast and Furious to provide anecdotal cases to support controversial new rules about gun sales. The regulation, called Demand Letter 3, would require 8,500 firearms dealers in Arizona, California, New Mexico and Texas that "have a significant number of crime guns traced back to them from Mexico" to report multiple rifle sales. 2012 Investigations by Congress and the DOJ Inspector General continued into 2012. In January, Patrick Cunningham, who was the criminal division chief at the Phoenix office of the U.S. Attorney's Office for the District of Arizona and has since resigned, asserted his innocence and his constitutional right against self-incrimination to avoid testifying. Cunningham worked directly under Burke during Fast and Furious. He was subpoenaed because of the role he might have played in the operation, and in the letter sent from the DOJ to Senator Grassley in February 2011 that claimed the ATF did not allow weapons to be trafficked to Mexico. On January 31, 2012, Democrats on the House Oversight and Government Reform Committee released a report titled, "Fatally Flawed: Five Years of Gunwalking in Arizona". The report concluded that there was no evidence of involvement by high-ranking appointees at the Justice Department in gunwalking. Rather, Operation Fast and Furious was just one of four such operations conducted over five years during the Bush and Obama administrations, and was only "the latest in a series of fatally flawed operations run by ATF agents in Phoenix and the Arizona U.S. Attorney's Office". In May, it was reported that the Department of Homeland Security (DHS) Office of Inspector General had begun to investigate Fast and Furious, with a report expected in October. The DHS had Immigration and Customs Enforcement agents assigned to the operation after becoming involved in late 2009. On May 3, 2012, Congressman Issa released a memorandum to the Committee on Oversight and Government Reform that included a draft of a resolution to hold Attorney General Holder in contempt. In the memo, Issa described the connection between Operation Fast and Furious and the OCDETF program since at least January 2009, which would involve multiple executive agencies including the ATF, DOJ, DEA, FBI, ICE, and DHS. He questioned how, why, or if oversight by high level Justice Department did not occur in such an important case. He further described the tragic death of Brian Terry, the whistleblowers and their mistreatment, and the