Nothing is provable in politics. You're not going to get consensus on 'the people's best interest'. You're not even going to get consensus on 'the people'. (Apparently the stockholders of AT&T aren't invited.)

Given that, 'campaign reform' just sounds like another way to keep participants out that you don't agree with. Businesses shouldn't participate. Unions shouldn't participate. Churches shouldn't participate. Non-profits shouldn't participate. Rich people can participate - as long as they aren't allowed to participate too much, and can't have any privacy when they do it.

If people who don't pay taxes are allowed to vote themselves benefits, I don't see how anyone can argue that a business owner can't donate whatever they want to whatever cause or candidate they like. Everyone participates and things shake out how they shake out.