"Indeed, Birnbaum himself admits,

'All contributions, of course, are not bribes'"

But I would argue that most contributions ARE bribes within the common dictonary definitions of the words "bribe" or "bribery."

The fact that some bribes are legal (or more properly not criminal), does not change their fundamental nature.

I certainly agree with your last sentence. In my opinion, IMMEDIATE, FULL online disclosure of ALL bribes (or campaign contributions or whatever eupemism is used) would be better than any prosecution or reforms to date.