Lawmakers called for a new dialogue on lowering the partisan temperature, and Trump urged Americans to come together as he assumed the role of national unifier for one of the first times in his presidency.
Republicans and Democrats took the field for their annual charity baseball game Thursday, setting aside politics for a few hours of spirited competition a day after a shooting rampage left a wounded colleague fighting for survival.
When the president intoned three words he said have brought Americans together for generations - "Let's play ball" - cheers rang out.
As Majority Whip - he's the third highest ranking republican in the house.
Griner, Bailey and a third officer, Henry Cabrera, engaged the gunman nearly immediately, and Alexandria Police officers quickly added support upon arriving at the scene, eventually fatally wounding the alleged gunman, identified by federal law enforcement sources to CNN as James Hodgkinson.
"The problem is that he's got a rifle and they've got handguns and it's not a fair fight at that point in time", Rep. Mike Bishop of MI told CBS News. Gabby Giffords of Arizona was hit in the head and grievously injured while meeting with constituents at a supermarket parking lot in 2011.
"He entered the room, spoke with Scalise's family and sat by his bedside with Mrs. Trump", said White House Press Secretary Sean Spicer.
"He's a patriot. And he's a fighter".
"He underwent immediate surgery, and an additional procedure to stop bleeding", according to MedStar center. He also suffered a severe loss of blood and required several transfusions.
Scalise was among five people wounded when a shooter sprayed rifle fire at congressional Republicans practicing on a diamond in Alexandria.
Staff members, and even the young son of one of the members, ran for cover, jumping into dugouts and over fences.
"All of that heat is different than what it was when Gabby got shot, so yeah, I think we'll take a hard look at it", Conaway said.
After Hodgkinson's shooting spree began on Wednesday morning at a Congressional GOP baseball practice, he was shot by Capitol Police on the scene and subsequently died of his injuries.
They're plodding ahead, hopeful for action but pragmatic enough to know that the latest shooting doesn't dramatically alter the dynamics of their uphill battle.
"In some ways, it's been the best and worst of times", Sen.
Rep. Mike Conaway, R-Texas, who was at the baseball practice when the shooting happened, said one of the lessons lawmakers learned from the shooting of Democratic Rep. Gabrielle Giffords in 2011 was to consult closely with local law enforcement.
Sue Hodgkinson told reporters outside her IL home Thursday that she was busy with her job and didn't know a lot about what her husband, 66-year-old James Hodgkinson, did between January and March. His picture is a caricature of Bernie Sanders as Uncle Sam and his feed is filled with anti-Trump sentiments.
"Were in town because we're tourists and I mean I heard about the shooting and I was like, 'Wow, it would be cool to come today to show support for the congressmen, '" said Otis Amick of Phoenix.
The House sergeant-at-arms is also in touch with the Federal Election Commission about the possibility of allowing the use of campaign funds for security, Strong said. "Probably the scariest thing I've lived through but, you know, thank the Lord for all the prayers and thoughts I've received", he said on "New Day".
On Thursday afternoon, the House honored the Capitol Police officers and others who risked their own lives to protect the elected representatives of the people.