This bill establishes in the legislative branch the National Commission on the Insurrectionist Attack Upon the United States Capitol. The commission shall (1) conduct an investigation that investigates relevant facts and circumstances relating to the insurrectionist attack on January 6, 2021, that ascertains, evaluates, and reports on the evidence developed by all relevant sources and that builds upon the investigations of other entities; (2) identify, review, and evaluate the lessons learned from the attacks regarding the structure, coordination, management, policies, and procedures of the federal government, and, if appropriate, state and local governments and nongovernmental entities, relative to detecting, preventing, and responding to such attacks; and (3) report to Congress and the President. The investigation may include relevant facts and circumstances relating to intelligence agencies, law enforcement agencies, the flow of assets to insurrectionist and domestic terrorist organizations, the role of congressional oversight and resource allocation, and other areas of the public and private sectors deemed relevant.