The president's meaning was not entirely clear, but Trump went on to say that "Because of him and the tremendous pain and suffering he's now enduring - and he's having a hard time, far worse than anybody thought - our country will perhaps become closer, more unified, so important".
Scalise underwent a third surgery Thursday and was still in critical condition in the morning at a local Washington, D.C., hospital.
"By playing tonight we are showing the world that we will not be intimidated by threats, acts of violence or assaults on our democracy", said US President Donald Trump, appearing on the park's giant screen but not attending.
The Democratic side won in a blowout, but the game was played in Scalise's honor with lawmakers of both parties dressed in purple in recognition of Scalise's Louisiana State University affiliation. The announcer's mention of Scalise, the House majority whip who was critically wounded in the attack Wednesday, brought the masses to their feet. Dr. Jack Sava of MedStar Washington Hospital Center said it's a "good possibility" that the Louisiana Republican will be able to return to work in his full capacity.
Republican and Democrats faced off in the the Congressional Baseball Game Thursday night, but the spirit of bipartisanship was alive and well following the assassination attempt on some lawmakers. Democrats gave the trophy to the Republicans, so it could be placedin Rep. Scalise's office as he recovers in the hospital.
"The Congressman will require additional operations, and will be in the hospital for some time", the hospital added.
He suffered a rifle wound in his left hip that shattered bones, tore organs and caused severe bleeding.
GOP Representative Steven Scalise was one of the people shot. Scalise is a member of the team and had been fielding balls at second base in preparation for the game when he was shot. Capitol Police said they had "no evidence to suggest that the purchases were not lawful". Authorities also were going over a cellphone, computer and camera taken from Hodgkinson's white van, which was parked near the ballfield.
Gunman James Hodgkinson, from Belleville, Illinois, a home inspector, died after officers in Mr Scalise's security detail fired back at him. This person was not authorized to speak publicly about the case and spoke on condition of anonymity.
Former New York Yankees manager Joe Torre presented the game ball to Capitol Police special agent David Bailey, who came out on the field on crutches after being injured in Wednesday's shooting, to throw out the first pitch to huge applause.
Republican Rep. Chuck Fleischmann of Tennessee scored in the first inning, enjoying a different sort of adrenaline than the one he experienced Wednesday when he passed by the shooter over bloodied ground to take shelter in a dugout - confessing later that "the fear factor was horrific".