Anyone looking for more evidence that politicians pay no attention to campaign contribution limits will find it in an astonishing trove of documents leaked to The Guardian, which published a report last week about the secret money that has recently flooded Wisconsin state politics.

The roughly 1,500 pages of emails, financial records and court filings — most of which have not been made public until now — were collected during an investigation of possible campaign-finance violations by Gov. Scott Walker’s campaign to beat back a 2012 recall effort.

After the recall failed, prosecutors alleged that the Walker campaign had skirted state law by asking donors to send contributions to ostensibly independent conservative groups — primarily the Wisconsin Club for Growth. Unlike a campaign committee, these tax-exempt groups have no limits on how much money they may receive, and no requirement to publicly disclose their donors under state law. But they are not allowed to work with a campaign to urge voters to vote for a candidate, because that would essentially allow donors to funnel money toward these groups to get around contribution limits that apply to campaign committees.

Reading the emails revealed by The Guardian, it appears that is exactly what the Walker campaign did.