Gabrielle Giffords and husband launched a new political action committee to "balance the influence of the gun lobby." It was the second anniversary of the Tucson, Ariz, shooting that killed six people and left Gabrielle Giffords critically injured.
President Obama spoke at a service Sunday evening in Newtown, Conn. He noted that it was the fourth time as president he's had to comfort victims of mass shootings. He promised to use 'whatever power this office holds' to prevent another tragedy of this kind.
At a prayer service in Newtown, Conn., Sunday night, President Obama said he would gather law enforcement and mental health officials to address the kind of gun violence that struck Sandy Hook Elementary School. 'We can't tolerate this anymore,' he said.