After a briefing by a task force investigating Capitol security, House members urge swift action.

Some House lawmakers on Monday urged the quick adoption of recommendations by a task force examining security shortcomings on Capitol Hill after the Jan. 6 attack on the complex by a mob of Trump supporters.

“Clearly, a need to act soon is upon us,” Representative Pete Aguilar, Democrat of California, told reporters after a briefing by the task force, endorsing quick authorization of funding for security updates at the Capitol. “I think that the recommendations would indicate that we should act on a security supplemental sooner rather than later.”

Lt. Gen. Russel L. Honoré, a retired Army officer whom Speaker Nancy Pelosi of California chose to lead the task force, and other members briefed lawmakers on Monday on the conclusions of their six-week review.

The task force is recommending the hiring of more than 800 Capitol Police officers, the construction of mobile fencing around the complex, and changes to Capitol Police Board procedures to allow the chief of the agency to quickly summon the National Guard during an emergency.

In a statement, the Capitol Police said the department’s leadership was reviewing the recommendations.

“We believe enhancements to the Capitol Complex’s physical infrastructure are required,” the statement said. “We also agree we need to increase our manpower and overall response capabilities.”

The task force also recommended funding for home security systems for every member of Congress, and closer collaboration between the Capitol Police and intelligence officials in federal law enforcement.

“General Honoré and other professionals have laid out a pretty comprehensive plan,” Representative Steven Horsford, Democrat of Nevada, said after leaving the briefing. “But it’s going to require Congress to act to give them the resources to the United States Capitol Police and others to keep the Capitol Complex safe, to keep our staff safe, to keep members safe.”

Mr. Horsford called the recommendations “common sense” and said he believed they balanced security with maintaining public access, but he added that he was “really frustrated” that some of his Republican colleagues continued to put out “misinformation” about the election and the attack on the Capitol.

“I’ve been in committee hearings where members are still spewing lies and putting some of us at risk in doing so,” he said. “I’m concerned with the elements of the domestic terrorists and their views on particular groups, people of color and members of color.”

The Pentagon is already evaluating a request from the chief of the Capitol Police to keep thousands of National Guard troops on Capitol Hill because of an increase in threats against lawmakers. The troops are scheduled to leave this week.

Ms. Pelosi has also pushed to establish an independent commission, modeled on the panel created after the Sept. 11 attacks, to further examine the circumstances surrounding the Jan. 6 breach.

Republicans have been reluctant to endorse the draft proposals outlined by Ms. Pelosi, accusing her of partisanship.

Representative Kevin McCarthy of California, the minority leader, aired his doubts on Sunday about General Honoré, who was applauded for his response to Hurricane Katrina. In a statement, he pointed to comments General Honoré had made before his appointment, including what Mr. McCarthy described in part as an “inflammatory accusation that Capitol Police officers themselves were complicit in the attack.”

“While there may be some worthy recommendations forthcoming, General Honoré’s notorious partisan bias calls into question the rationality of appointing him to lead this important security review,” Mr. McCarthy said. “It also raises the unacceptable possibility that the speaker desired a certain result: turning the Capitol into a fortress.”

Representative Pramila Jayapal, Democrat of Washington and chairwoman of the Congressional Progressive Caucus, said she wanted more answers about how Jan. 6 unfolded.

“There was a real gap between how we felt about our safety going into Jan. 6 — we thought we were going to be safe and protected — and what actually happened,” she said. “That has to be eliminated if members are going to feel comfortable coming in to do our work.”