Can we get money out of politics?

Some argue that efforts for reform have failed:

All this regulation has a price. If you want to know who contributed to the campaign of a president or a senator or a state legislator, it's not as easy to figure it out as it used to be. All these webs of committees that have cropped up to get around campaign finance limits end up obscuring the path of the money. Some of the money comes from individual donors, who can be identified in FEC records, but lots of it comes from groups who only have minimal disclosure requirements, and the donors to those groups may be other groups of people bundled together. Who's backing a candidate? It's almost impossible to tell nowadays.