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

Sources tell ABC News Trump is watching the storming of the Capitol protests on television at the White House, some close to President Trump beside themselves pushing him to do more to stop and condemn the violence playing out on Capitol Hill.

Many White House staffers avoided going to work Wednesday fearing events could be violent, and they did not want to be near the president who has been fuming for days.

Some sources tell ABC there is chatter among White House aides to personally resign as they can't stand by watching what is happening right now play out.

-ABC News' John Santucci and Katherine Faulders

At District of Columbia Mayor Muriel Bowser's request, Army Secretary Ryan McCarthy has activated about 340 unarmed D.C. National Guardsmen to assist local law enforcement with the demonstrations taking place on Wednesday pegged to the Electoral College certification.

"We think it's helpful to have our D.C. Guardsmen, who are our Guard, that I have requested from the Secretary of the Army to assist MPD [Metropolitan Police Department] with traffic management," Bowser said Monday. "It absolutely frees up more officers."

The D.C. Guard is unique in that any call-ups have to be made by the Army secretary and not the jurisdiction’s top elected official -- as is the case with state governors. Additionally, more focus has been given to the call-ups since the controversial presence of D.C. Guardsmen and the use of D.C. Guard helicopters during the Black Lives Matter demonstrations last summer.

"They will be deployed to assist us with crowd management, as well as traffic control in our nation's capital that will allow for the police officers to focus on anyone who's intent on instigating agitating or participating in violence in our city," said D.C. Police Chief Robert Contee. He also labeled any possibility of violence surrounding the protests as "unacceptable" and repeated that carrying firearms is not allowed under D.C. law.

A senior defense official said Bowser put in the request for Guardsmen on Dec. 31 and that it was approved Monday morning. Beginning Tuesday through Thursday, the 340 personnel will help man 30 traffic control checkpoints around the northern side of the downtown area close to the National Mall.

"No one's going to be armed or body armor or anything like that," said the official. "What they need is traffic control."

-ABC News' Luis Martinez and Quinn Owen