It’s been a rough start to the week over at the American Legislative Exchange Council.

Common Cause has submitted a formal whistleblower complaint against ALEC to the IRS this morning, alleging that the organization has flouted federal tax laws by portraying themselves as a tax-exempt charity and misusing their 501c3 status by acting primarily as a lobbying organization, according to a press release.

501c3 organizations have very strict limitations on lobbying, and ALEC consistently states on its tax returns that it does not engage in lobbying. But it’s hard to see how an organization that helps facilitate meetings between corporate representatives and state legislators, produces model legislation and coaches state legislators on how to advocate for and defend such legislation can be considered anything BUT lobbying.

Corporations provide the vast majority of ALEC’s funding. But since their membership dues are written up as donations to a “charitable” organization, they can deduct the dues from their taxes – leaving the American taxpayers to make up the difference, says Common Cause president Bob Edgar. “Corporations that have been funding this organization have, in fact, been lobbying and getting a tax break. The taxpayers of the United States have been paying for a lobbying operation because these corporations can take this off on their taxes.”

The 4,000 pages of internal ALEC documents submitted to the IRS make the case that ALEC is an active lobbying organization, and by law, the IRS is required to launch an investigation.

As if that isn’t headache enough, a thirteenth company, Procter & Gamble, has ended its membership in ALEC. As a P&G spokesperson told Color of Change, the company “made the determination that ALEC does not help P&G compete for consumers’ loyalty and support.”

The pressure is now on Johnson & Johnson, one of the companies still connected to ALEC and a target of a petition drive to get ALEC-member corporations to leave the organization, to explain how ALEC’s extreme agenda benefits their consumers when their major competitor P&G concluded it did not.