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Illinois: Attorney general moves to dismiss tax case initiated by whistleblower on state’s behalf

Illinois Attorney General Lisa Madigan recently moved to dismiss a tax case brought by a tax whistleblower and, in doing so, suggested that in-state actors soliciting orders in Illinois may not have triggered “substantial nexus” to tax. We have been following developments as one notorious lawyer who has been dubbed the “king of qui tam,” Stephen Diamond, filed suit under the Illinois False Claims Act (IFCA) to prosecute non-compliance with the State’s use tax.

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