Campaign finance laws rarely serve the public, in my opinion. They serve incumbents and those in the entrenched duopoly commonly referred to as Republicans and Democrats.
They don't encourage good behavior. They encourage removing people from the process, with threats of fines and other penalties, including jail.
And for the less ethically inclined, the threat of fines and jail and or the laws being used as a weapon give more reason to engage in "under the table" behavior or to find ways to skirt the law in order to make the process even less opaque.
". . . the newly formed nonprofit group, Accountable America, is planning to confront donors to conservative groups, hoping to create a chilling effect that will dry up contributions."
Read more about this troubling development in the article in the New York Times on the latest threat to use campaign finance laws as a weapon against the opponents of a candidate:
"Group Plans Campaign Against G.O.P. Donors"