And congress should investigate to determine who was behind the organization of the ANTIFA/BLM riots. Who trained the riot leaders, who funded the transportation, who was paying the rioters, who paid for and delivered the pallets of bricks, who sent the U-Hauls full of clubs and shields? Did anyone in congress or other branch of government have a hand in any of this?
You ask questions that the Democrat Socialists would never willingly answer, unless burning matches were thrust beneath their fingernails. So other means of discovery would have to be instituted, like money trails, phone communications and GPS tracking of suspects. Very little will be written down, and emails would be deleted, but movement can still be traced.
No government agency is prepared to make this kind of commitment. It would take a dedicated cadre of outsiders to do the necessary scut work, and when approaching the perpetrators too closely, also highly dangerous.
Congress is a legislative body.
Not that it stays in its lane, or is competent. I view it as a fundamentally anti-USA institution, enemy within. But even so, its nominal functions are spelled out in the consitution.