General Discussion

His activities and budget and subpoena power were very limited. He only investigated what the AG already had the authority to investigate.

The commission and potential committee the Speaker could form would have much broader authorities, powers and budgets than the DOJ has. If DOJ was going to do those things, Congress would have to vote to grant those broader powers and give DOJ a larger budget.

There are things the AG can do that Congress can't (e.g., conduct criminal investigations, convene grand juries, indict and prosecute people, etc.), things that Congress can do that the AG can't do. A commission or committee is necessary to carry out those latter activities that the AG either doesn't have the authority to do or doesn't have the budget, staffing and expertise to handle. That's why it's important for there to be a commission or committee working while the AG focuses on the criminal investigations and prosecutions that it is working on.

Of course, they'll cooperate and coordinate, but the work needs to be spread out.