In another thread some time ago, someone * asked the best way to report illegal income without having the feds on them for either tax evasion or illegal income. I feel ignorant for not thinking of pacs and superpacs. In fact, I believe I saw a thread title recently that suggested they are money laundering.
Simply running a campaign into the ground and then quietly moving the money into different accounts after a couple of years is incredibly popular as well. The US is terrible at tracking defunct campaign accounts.
They did it for a bit, and assuredly for a bit. And yes, they were famous for a bit. If you can find a Lemmbin server 2 weeks behind on its queue, you might find the bits.