some were subpoenaed during an inquiry about who was paying the prominent individuals' speaking fees. Several commentators wrote that under the PATRIOT Act, these people could be potentially prosecuted for providing material support for terrorism, a claim Giuliani denied. Giuliani and others wrote an article for the conservative publication National Review stating their position that the group should not be classified as a terrorist organization. They supported their position by pointing out that the United Kingdom and the European Union had already removed the group from their terrorism lists. They further assert that only the United States and Iran still listed it as a terrorist group. However, Canada did not delist the group until December 2012. 2008 presidential campaign In November 2006, Giuliani announced the formation of an exploratory committee toward a run for the presidency in 2008. In February 2007, he filed a "statement of candidacy" and confirmed on the television program Larry King Live that he was indeed running. Early polls showed Giuliani with one of the highest levels of name recognition ever recorded along with high levels of support among the Republican candidates. Throughout most of 2007, he was the leader in most nationwide opinion polling among Republicans. Senator John McCain, who ranked a close second behind the New York Mayor, had faded, and most polls showed Giuliani to have more support than any of the other declared Republican candidates, with only former senator Fred Thompson and former governor Mitt Romney showing greater support in some per-state Republican polls. On November 7, 2007, Giuliani's campaign received an endorsement from evangelist, Christian Broadcasting Network founder, and past presidential candidate Pat Robertson. This was viewed by political observers as a possibly key development in the race, as it gave credence that evangelicals and other social conservatives could support Giuliani despite some of his positions on social issues such as abortion and gay rights. Giuliani's campaign hit a difficult stretch during the last two months of 2007, when Bernard Kerik, whom Giuliani had recommended for the position of Secretary of Homeland Security, was indicted on 16 counts of tax fraud and other federal charges. The media reported that when Giuliani was the mayor of New York, he billed several tens of thousands of dollars of mayoral security expenses to obscure city agencies. Those expenses were incurred while he visited Judith Nathan, with whom he was having an extramarital affair (later