In December 2012, Obama named Biden to head the Gun Violence Task Force, created to address the causes of gun violence in the United States in the aftermath of the Sandy Hook Elementary School shooting. Later that month, during the final days before the United States fell off the "fiscal cliff", Biden's relationship with McConnell again proved important as the two negotiated a deal that led to the American Taxpayer Relief Act of 2012 being passed at the start of 2013. It made many of the Bush tax cuts permanent but raised rates on upper income levels.