Giffords who was at a meet-and-greet in 2011 outside a Tucson supermarket when a lone gunman opened fire, killing six and wounding 13, expressed her support for the Vegas victims. "I know that he has sometimes reacted the way the vast majority of us have reacted which is with absolute consternation about this kind of gun violence and I hope he comes back to that", Raskin said. "In the interim, thousands more have been lost to the daily, ruthless toll of gun violence". Chris Murphy, D-Conn., who sought to tighten gun laws in the aftermath of the 2013 mass shooting in Newtown, Connecticut, that left 20 children and five adults dead at Sandy Hook Elementary School. "Do not wait. The nation is counting on you".
Sen. Richard Blumenthal, also of CT, said he's "furious" that Congress has failed to address gun violence since the Pulse nightclub shooting in June of past year.
"Only action and leadership will do that", he said.
"We can't just be working to defeat bad legislation like federally mandated concealed-carry and the deregulation of silencers", Kelly said. "We need his plans".
The two also called on Congress to establish a special commission to work together in a bipartisan fashion "toward solutions that will save lives". This must stop - we must stop this. "Give me a break", Mr Kelly said in front of Capitol Hill.
Scalise, a Louisiana Republican, returned to the Capitol last week after he was shot and critically wounded in June as he and fellow Republicans practiced for a congressional baseball game.
The Sunday night incident at the Mandalay Bay Hotel in Las Vegas is the worst mass shooting in modern US history, surpassing the shooting at the Pulse nightclub in Orlando that left 49 dead in 2015. "I'm exhausted of waking up to horrific news like this, and I'm sure you are, too".
"As Members of Congress, our words of comfort to the families of the victims of the Las Vegas massacre will ring hollow unless we take long overdue action to ensure that no other family is forced to endure such an unimaginable tragedy".
She added that she was praying for her former colleagues and elected leaders to "find the courage it will take to make progress on the challenging issue of gun violence".