Wis. Stat. § 893.40
Except as provided in ss. 846.04(2) and (3) and 893.415 , action upon a judgment or decree of a court of record of any state or of the United States shall be commenced within 20 years after the judgment or decree is entered or be barred.
Wis. Stat. § 893.40
The defendant was prejudiced by an unreasonable 16-year delay in bringing suit; thus laches barred suit even though the applicable limitation period did not. Schafer v. Wegner, 78 Wis. 2d 127, 254 N.W.2d 193 (1977). A request by the state or an offender to correct a clerical error in the sentence portion of a written judgment to reflect accurately an oral pronouncement of sentence is not an "action upon a judgment" under this section. State v. Prihoda, 2000 WI 123, 239 Wis. 2d 244, 618 N.W.2d 857, 98-2263. This section clearly and unambiguously specifies that the date when a cause of action to collect past-due child support payments begins to run is the date when a judgment ordering payments is entered. State v. Hamilton, 2003 WI 50, 261 Wis. 2d 458, 661 N.W.2d 832, 01-1014. Under the circumstances present in this case where a statute precluded a provision in a judgment, the statute of repose could not begin to run as to that provision until the legislature changed the law such that the provision could be carried out. Johnson v. Masters, 2013 WI 43, 347 Wis. 2d 238, 830 N.W.2d 647, 11-1240.