The president also visited with the Capitol Hill police officers who were shot while risking their lives to save the congressmen who were practicing for a charity baseball game that's scheduled for Thursday.
"He will be in the hospital for a considerable period of time, presumably weeks", said Jack Sava, trauma director at MedStar Washington Hospital Center, who spoke Friday about the Louisiana Republican who remains in critical condition at the hospital in the District.
"It's been more hard than people even thought at the time", Trump said after leaving MedStar Washington Hospital Center.
The wife of the gunman who wounded a Republican congressman and several others says her husband went to Washington because he wanted to work with people on changing tax brackets.
Hodgkinson had a history of posting angry messages against Mr Trump and other Republicans on social media.
The shooting occurred at a popular park and baseball complex in Alexandria, Virginia, across the Potomac River from Washington, where Republican lawmakers and others were gathered for a morning practice about 7 a.m. "Additionally, we want to thank the Capitol Police for their heroic actions to stop the shooter before he could hurt even more people". Lobbyist Matt Mika was shot multiple times and critically injured and remained hospitalized.
Both said it should not take an incident like Wednesday's shooting to bring political adversaries together.
"It's a pretty good time for all, except for the fact that the Democrats beat us so much", Rep. Mo Brooks, R-Ala., said on CNN before describing what happened.
The shot fired at Scalise left perhaps hundreds of bullet fragments internally, many of which may never be removed because surgery might be more unsafe than leaving them in place, Sava said.
Mr Richmond, who plays for the Democratic team, said he had visited the hospital twice and planned to go again before Thursday night's game at Nationals Park.
A congressional staffer, Zach Barth, was also shot in the leg and has since been released from the hospital. Scalise was playing second base, his normal position on the congressional baseball team.
Earlier Thursday, Republican lawmakers met behind closed doors to share reflections and pray. He had been living out of his van in the Alexandria area in recent months, the Federal Bureau of Investigation said. Democrats and Republicans played in honor of their grievously wounded colleague, Republican Rep. Steve Scalise.
His family said they appreciate the support they've received from lawmakers and the president, and are thankful for the bravery of the special agents. Jeff Flake and Rep. Brad Wenstrup, who is a physician, applied pressure to his wound, Flake said.
The shots came in succession, blast after blast interrupting lawmakers' early-morning baseball practice.
But while members of Congress and most Americans understood this shooting as a tragedy, some malcontents threatened members of Congress, which prompted a discussion about whether America's elected leaders need additional security.