(1) To investigate and report upon the facts, circumstances, and causes relating to the January 6, 2021, domestic terrorist attack upon the United States Capitol Complex (hereafter referred to as the “domestic terrorist attack on the Capitol”) and relating to the interference with the peaceful transfer of power, including facts and causes relating to the preparedness and response of the United States Capitol Police and other Federal, State, and local law enforcement agencies in the National Capital Region and other instrumentalities of government, as well as the influencing factors that fomented such an attack on American representative democracy while engaged in a constitutional process.
(2) To examine and evaluate evidence developed by relevant Federal, State, and local governmental agencies regarding the facts and circumstances surrounding the domestic terrorist attack on the Capitol and targeted violence and domestic terrorism relevant to such terrorist attack.
(3) To build upon the investigations of other entities and avoid unnecessary duplication of efforts by reviewing the investigations, findings, conclusions, and recommendations of other executive branch, congressional, or independent bipartisan or nonpartisan commission investigations into the domestic terrorist attack on the Capitol, including investigations into influencing factors related to such attack.
Seems like the first two points are law enforcement matters
https://january6th.house.gov/about