The documents show that Moore and Kahler went back and forth on how to ensure that Eisenga’s concerns were addressed without causing all former child-support orders to be reopened.

In a Sept. 19 email, Kahler warned Moore that making the changes suggested by Eisenga and his lawyer “will potentially open the flood gates because the courts will be required to revise any child support order that was granted before the effective date, since the amount will not have been determined using the new method.”

In a followup email the same day, Kahler told Moore, “It’s hard to fashion a general principle that will apply to only one situation.”

The documents show that the two finally agreed on the 10 percent figure in the bill, requiring only child-support payments that exceed the proposed standards by 10 percent to be recalculated.

Court records show Eisenga has sought unsuccessfully several times to lower his child-support payments. His latest appeal was rejected by the Wisconsin Court of Appeals on Oct. 3. Kleefisch introduced the bill two months later, on Dec. 6.

Kleefisch said he stands by the bill and denies that its primary goal is to benefit Eisenga.