Hard to quantify, I just can't rely on that delineation. Congress doesn't even know what laws they pass and isn't scrutinizing like "wait, enthusiasts expect t

Hard to quantify, I just can't rely on that delineation. Congress doesn't even know what laws they pass and isn't scrutinizing like "wait, enthusiasts expect the FBI to do domestic things, unless you rewrite this Defense Spending Bill we're all blocking it from getting out of committee", instead, defense contractors pre-write whatever they want that expands the role of the agency they already have the most contacts with so they land the ensuing contract. There isn't any law or constitutional issue that would add a redundancy to limiting the change of these agency charters. And finally, we just have to assume that these autonomous agencies with $10bn annual budgets are operating professionally within the bounds of their mandates.