How valuable are those trophies compared to bribes, or the tacit bribes of cushy "consultancy" roles? How do you stop lobbyists from gutting those regulators - what use is a fiercely independent regulator that has no resources?
Getting money out of politics is the hardest part.
I am not sure how the US will find the political will short of getting burned badly enough for partisans to align on reform. How bad does it have to get?