However, an official said Trump may only meet with Scalise's family, because the congressman may not be well enough for a visit.
David Miller, who saw the shooting, described a scene in which some players were far enough away from the gunman to run for shelter, while others were pinned down in the middle of the ball field. The man calmly asked which party's lawmakers were practicing and Duncan told him they were the Republicans. The agency says the victims are being transported to the hospital.
The shooter, identified as James Hodgkinson of Belleville, Illinois, ducked behind the third base dugout and exchanged gunfire with the two members of the Capitol Police.
Practice for the game began in late April, with players meeting every day at 6:30 a.m.to prepare for the game. A helicopter arrived to medevac at least one victim.
The FBI is taking over the investigation, Brown said in a midmorning update, because the attack involved violence against a federal officer.
Capitol Police Officer Crystal Griner, right, walks behind House Majority Whip Steve Scalise, middle, on November 15, 2016.
Trump also canceled an afternoon event at the Department of Labor. He was listed in critical condition Wednesday night at a Washington hospital, which said he will require several more operations.
Pence's office says he spoke with the two injured members of the U.S. Capitol Police, as well as the father of lobbyist Matt Mika, who was shot multiple times.
"I want to commend Special Agents Griner, Bailey, and Henry Cabrera for their heroic and appropriate response", said U.S. Capitol Police Chief Matthew Verderosa in a statement. Speaking at the White House, Trump said Scalise was "badly injured" but in stable condition and would recover.
The charity game, pitting Republican lawmakers against their Democratic colleagues, was set to proceed as scheduled at 7:05 p.m. (2300 GMT) at Nationals Park, home of the Washington Nationals Major League Baseball team, with thousands of spectators expected in the stands. Gunshots hit the YMCA's windows, and the building was shut down and the block cordoned off, NPR's Tom Bowman reported from the scene.
Chief Minister Shivraj Singh Chouhan calls off 'peace fast' in Madhya Pradesh
A 26-year-old farmer died in Badavan village of the district, with locals alleging on Friday that he was beaten up by policemen. Farmers in Madhya Pradesh's Mandsaur district have been protesting for better prices for their produce and loan waiver .
During a press conference authorities from Alexandria and Capitol Police said it was very early on in the investigation and they will not say much about the incident. Two of three officers wielded AR-15 automatic rifles.
In a dramatic account of the shooting, Representative Mo Brooks of Alabama said the shooter, who appeared to be a white man, was armed with a rifle.
Brooks said he tried to help Scalise, telling CNN, "We used my belt to help put a tourniquet around his leg".
Most members of Congress are not given a security detail but Bailey and Griner had been assigned to House Majority Whip Steve Scalise because he in a leadership position.
Texas Congressmen Joe Barton and Roger Williams coach for the Republican team.
"We've got to come together for the good of our country and the future of our country", he said.
Sen. Amy Klobuchar, D-Minn., also responded on social media: "Prayers for Rep. Scalise, aides, law enforcement, and all those who were hurt", she tweeted.
"Our thoughts and prayers are with the members of Congress, their staffs, Capitol Police, first responders, and all others affected".
Bernie Sanders, I-Vt., said on the Senate floor that the shooter apparently was a volunteer for his presidential campaign a year ago.
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