An unnamed official claimed there was good reason to believe Awlaki "has been involved in very serious terrorist activities since leaving the US 2002, including plotting attacks against America and our allies." US President Barack Obama approved the targeted killing of al-Awlaki by April 2010, making al-Awlaki the first US citizen ever placed on the CIA target list. That required the consent of the US National Security Council, and officials argued that the attack was appropriate because the individual posed an imminent danger to national security. In May 2010, Faisal Shahzad, who pleaded guilty to the 2010 Times Square car bombing attempt, told interrogators he was "inspired by" al-Awlaki, and sources said Shahzad had made contact with al-Awlaki over the Internet. Representative Jane Harman called him "terrorist number one", and "Investor's Business Daily" called him "the world's most dangerous man". In July 2010, the US Treasury Department added him to its list of Specially Designated Global Terrorists, and the UN added him to its list of individuals associated with al-Qaeda. In August 2010, al-Awlaki's father initiated a lawsuit against the US government with the American Civil Liberties Union, challenging its order to kill al-Awlaki. In October 2010, US and UK officials linked al-Awlaki to the 2010 cargo plane bomb plot. In September 2011, al-Awlaki was killed in a targeted killing drone attack in Yemen. On March 16, 2012, it was reported that Osama bin Laden plotted to kill US President Barack Obama.