Impeachment article has 200 cosponsors: US rep.

Former Republican New Jersey Gov. Chris Christie called on President Donald Trump to ask protesters to leave the Capitol grounds on ABC News Live.

"It’s pretty simple," he said. "The President caused this protest to occur. He's the only one who can make it stop."

"What the vice president just said is not good enough, what the president said is not good enough," Christie added. "The President has to come out and tell his supporters to leave the Capitol grounds, and to allow the Congress to do their business peacefully. Anything short of that is an abrogation of his responsibility." 

Christie noted that both Trump and his son Donald Trump Jr. had previously spoken to the crowd. 

"I don't know that they anticipated this was going to be the result," he said. "But it doesn't matter whether they did or they didn’t. This is the result of their words."

The entire D.C. National Guard has been activated by the Department of Defense to respond to the violent scene at the U.S. Capitol.

"The D.C. Guard has been mobilized to provide support to federal law enforcement in the District. Acting Secretary Miller has been in contact with congressional leadership, and Secretary McCarthy has been working with the D.C. government. The law enforcement response will be led by the Department of Justice," said chief Pentagon spokesman Jonathan Hoffman.

White House press secretary Kayleigh McEnany tweeted that Trump had directed the National Guard and other federal protective services to deploy -- but Trump has not called on protesters to leave as Vice President Mike Pence and others have.

In a joint statement from House Speaker Nancy Pelosi and Senate Minority Leader Schumer, the Democratic congressional leadership called on Trump to put an end to the chaos.

"We are calling on President Trump to demand that all protestors leave the U.S. Capitol and Capitol Grounds immediately," it said.

Trump so far has only called on his supporters to "stay peaceful" in a tweet. Meanwhile, a supporter of Trump's sat inside Pelosi's office as the breach of the building continued. A message was left for the speaker on a manila folder on her desk reading, "WE WILL NOT BACK DOWN."

Sources tell ABC News that a woman has been shot inside of the U.S. Capitol and has been seriously injured. It’s unclear what led to the shooting or if law enforcement was involved. 

A source familiar with the situation said that D.C. Fire EMS are transporting a woman in critical condition to a local hospital.

-ABC News' Mike Levine and Luke Barr