MedStar Washington hospital says Rep. Steve Scalise is in critical condition following a shooting at a congressional baseball practice early Wednesday morning.
The Louisiana congressman underwent surgery for a gunshot to the hip and was reported to be in stable condition.
Capitol Police officers who were in his security detail had wounded the shooter, who later died of his injuries. Two of those officers also were wounded and both were expected to recover.
The fifth person wounded in the shooting in Alexandria, Virginia, on Wednesday morning was a former congressional aide, Matt Mika, who now works for Tyson Foods.
The alleged shooter has been identified as 66-year-old James T. Hodgkinson of Belleville, Illinois.
Trump said he has spoken with Scalise's wife and "pledged our full and absolute support." And he talked with the chief of the Capitol Police "to express my admiration for their courage."
The president said in his brief remarks, in the Diplomatic Room of the White House that "We may have our differences, but we do well to remember that everyone who serves in our nation's capital is here because they love our country."
He went on to say "we are strongest when we are unified and work together for the common good."
During his live statement, Trump also said, "Many lives would have been lost if not for the heroic acts of two capitol police officers."
Scalise was playing second base when he was shot in the hip by a man standing off the third-base side of the field. He says Scalise dragged himself into the outfield to get farther away from the shooting. Scalise underwent surgery at MedStar Washington Hospital Center.
The FBI reports that Hodgkinson was carrying one handgun and one rifle.
An initial police report lists the gunman's weapon as an M-4 assault rifle, CBS News has learned. Sen. Jeff Flake, R-Arizona, described the gunman to reporters as a middle-aged white male wearing a blue shirt and possibly jeans.
The FBI says it's investigating the social media presence and motives of Hodgkinson.
Officials say they're investigating Hodgkinson's whereabouts, associates, web postings and "potential motivations."
Authorities say the gunman was unemployed and homeless. He was living out of his van in Alexandria, VA after a “run in” with law enforcement at his home in Illinois in March.
During a press conference, Capitol Police said they are exploring all angles for a possible cause. The FBI said they're not sure if the shooting was an assassination attempt.
"My view of him was just quick behind the dugout, and then when I realized he had a line of sight into the dugout with all the members there then we obviously went back down quickly," Flake said.
"This is a stable situation," Alexandria Police Chief Michael Brown told reporters. "At this point, there's no additional threat. We consider this incident to be a closed incident under investigation."
Texas Rep. Roger Williams says a member of his staff was shot at the baseball practice in Virginia where Rep. Steve Scalise was wounded.
Williams, who is one of the coaches, said the Republican baseball team holds its practice every morning at 6:30 a.m. at Eugene Simpson Stadium Park in Alexandria, Virginia.
Scalise is the No. 3 House Republican leader. He was first elected to the House in 2008 after serving in the state legislature.
Rep. Jeff Duncan said in a statement that he was at the practice and "saw the shooter."
"Please pray for my colleagues," Duncan said.
Duncan says he suspects he spoke with the man who minutes later opened fire on the congressional baseball practice.
Duncan, of South Carolina, says he gave a description of the man to Alexandria police that "fits the picture that's being shown on TV."
Duncan says he was preparing to leave the baseball practice when the man approached him and asked: "Excuse me, sir, who's practicing today? Democrats or Republicans?'"
Duncan said he replied it was the Republican team, and the man thanked him and turned around. Nothing about the man "struck me as being out of the ordinary."
Duncan says he left the field at 7:02 a.m. and had no idea there had been a shooting.
He said he has no doubt the man he spoke with was the shooter, based on photos he's seen.
House Speaker Paul Ryan has told his fellow lawmakers that "an attack on one of us is an attack on all of us."
The Wisconsin Republican praised the efforts of Capitol police officers and other law enforcement.
Ryan said, "these were our brothers and sisters in the line of fire."
Ryan received a standing ovation as lawmakers in both parties came to the House chamber as a show of unity.
Ryan said implored lawmakers in both parties "to resolve to come together to lift each other up and to show the country, show the world that we are one House, the people's House, united in our humanity."
Democratic Sen. Bernie Sanders says Hodgkinson had apparently volunteered on his presidential campaign.
Sanders, of Vermont, says in a statement: "I am sickened by this despicable act."
He says that "violence of any kind is unacceptable in our society and I condemn this action in the strongest possible terms."
He paid tribute to Capitol Police for their response to the shooting, and said his "hopes and prayers" are with House GOP Whip Steve Scalise and others who were wounded.
Sanders challenged Hillary Clinton for the Democratic nomination in the 2016 presidential election.
He adds in his statement that "real change" can only come through nonviolent action.
Rep. Martha McSally says the congressional baseball game will take place as scheduled Thursday night.
McSally says House Speaker Paul Ryan made the announcement, just hours after a gunman opened fire early Wednesday on members of Congress who were practicing outside Washington D.C. for the charity baseball game. McSally says the announcement was met with a standing ovation.
McSally, a Republican from Arizona, says "we can't let anyone stop us from doing our work and from standing together."
Nevada Rep. Mark Amodei said in a tweet, “Keeping my colleagues & those injured in Alexandria this morning in my thoughts. As always - thankful for a swift response by Capitol Police”
U.S. Senator Catherine Cortez Masto (D-Nev.) released the following statement:
“In light of this morning’s attack, I call on Americans to come together to condemn all acts of violence. Today we demonstrate our resilience in times of darkness and work together to overcome hate with empathy and kindness. My heart goes out to Rep. Steve Scalise, staff and officers who were injured, others who survived the shooting, and their loved ones at this difficult time. I am grateful to Capitol Police officers for their heroism and to the first responders who rushed to help – lives were saved because of their swift response. Regardless of political affiliation, we all share common goals to better our nation and we must show that despite efforts to divide us, we stand as one.”
(The Associated Press, CBS News contributed to this report.)
Keeping my colleagues & those injured in Alexandria this morning in my thoughts. As always - thankful for a swift response by Capitol Police
— RepMarkAmodei (@MarkAmodeiNV2) June 14, 2017
