[mac_truck]

My understanding is that there is no federal requirement to disclose the details of super-PAC donors.

[kingattax]

your understanding is incorrect

[DoodleDawg]

My understanding is that there is no federal requirement to disclose the details of super-PAC donors.

They do. But since they can accept donations from corporate entities, which don't have to disclose their sources, their largest donors can remain behind a shell company. Individuals don't.