Campaign finance reform is one of those issues that is absolutely vital to reform, but so toxic no one wants to touch it. Everyone has dirt on their hands. Everyone. Whether you have run for president of the United States or president of the school board, you have money that you probably shouldn't have.
Two local examples I can think of involve a millionaire a million dollars each on a dozen races that normally cost, at most $250K and an heir to some manufacturing money dropping $60K on school board races that normally cost $3k-7$k. Both of these were done very publicly and quite blatantly. But how do you investigate when the DA and every politician has some of that money or money like that?
You would think issue based CFR would be easier, but if hate-crime legislation limits free speech just imagine what the bigots/churches would say if we take away their tax exempt status as well as their tire-iron?
Good luck on all of that, America.