Upon taking office, Bush pushed through a $1.3 trillion tax cut program and the No Child Left Behind Act, a major education bill. He also pushed for socially conservative efforts, such as the Partial-Birth Abortion Ban Act and faith-based welfare initiatives. After the terrorist attacks on September 11, 2001, Bush created the United States Department of Homeland Security and declared a global war on terrorism. In October 2001, Bush ordered an invasion of Afghanistan to overthrow the Taliban, destroy the terrorist group al-Qaeda, and capture Osama bin Laden. That same month, he signed into law the controversial Patriot Act in order to authorize surveillance of suspected terrorists. In 2003, Bush ordered an invasion of Iraq, with administration officials arguing that the Saddam Hussein regime possessed weapons of mass destruction (no WMD stockpiles were ever found) and had an operational relationship with al-Qaeda (which conflicted with the consensus in the intelligence community). Later that year, he signed the Medicare Prescription Drug, Improvement, and Modernization Act, which created Medicare Part D.