Yogananda Pittman

The Senate Rules and Homeland Security committees will hear from top military officials on their role in the insurrection. This, as a House panel weighs new Capitol security spending.

The officials testifying Tuesday resigned in the wake of the Jan. 6 insurrection. Former Capitol Police Chief Steven Sund said, "None of the intelligence we received predicted what actually occurred."

The U.S. Capitol Police has suspended six officers with pay for their actions during the Capitol riots on January 6. A further 29 officers are under investigation.

The Jan. 6 insurrection at the Capitol exposed a number of security shortfalls at the seat of American democracy. Acting Chief Yogananda Pittman released a video statement Friday evening.

"In light of recent events," the acting chief said, "I can unequivocally say that vast improvements to the physical security infrastructure must be made."

Acting U.S. Capitol Police Chief Yogananda Pittman told a House committee that the department expects to answer "for our failings on Jan. 6."

Several lawmakers were visibly upset Tuesday by the new security system at the Capitol complex that requires them to walk through metal detectors, following last week's deadly insurrection.

Some officers are being investigated over involvement at the protests, while others fought off protesters who once supported them.