Congress members and their staff were at an early morning practice for the Congressional baseball game when about 50 shots rang out.
The gunman has been identified as James T. Hodgkinson of Belleville, Ill. He also briefly chatted with Capitol Police officers.
Following the visit, the President tweeted, "Just left hospital". Scalise was among those injured and was first believed to be in stable condition.
Scalise, R-La., was among those shot, NBC News confirmed.
Scalise was taken to MedStar Washington Hospital Center for surgery, where he remained in critical condition. The bullet traveled across his pelvis, injuring internal organs and causing severe bleeding.
Scalise spoke to his wife on the phone before he underwent surgery. His condition is critical, and he will require additional operations. "The FBI is leading the investigation and will continue to provide updates as new information becomes available".
"Congressman Scalise was the one who suffered, but had he not been there his detail team wouldn't have been there either", said Paul.
"There must have been 50 to 100 shots fired", he told CNN.
Barth said on "Fox & Friends" he was shagging fly balls in the outfield at the baseball practice in Alexandria, Virginia, when the shooting began. "I give him credit". We live in challenging times and the political rhetoric has been turned up to an alarming level. "We now need to let law enforcement continue to do their jobs and get all the facts of what happened".
"The United States Capitol Police is dedicated to its mission to protect the U.S. Capitol, members of Congress, staff and the visiting public, and. we saw how our officers' extensive training and quick response saved lives", he said. Williams, who could be seen walking on crutches, sustained a minor injury during the shooting when he dove into a dugout to avoid the crossfire.
Congressman Roger Williams twisted his ankle ducking for cover.
"It's too early to tell whether the shooting was an act of terrorism or whether members of Congress were specifically targeted", Federal Bureau of Investigation special agent Tim Slater told reporters at a Wednesday morning news conference.
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