The ex post facto prohibition applies to judicial pronouncements as well as legislative acts. The question to be addressed is whether the new law criminalizes conduct that was innocent when committed. State v. Kurzawa, 180 Wis. 2d 502, 509 N.W.2d 712 (1994).

Legislation creating penalty enhancers resulting from convictions prior to the effective date does not run afoul of the ex post facto clause. State v. Schuman, 186 Wis. 2d 213, 520 N.W.2d 107 (Ct. App. 1994).

An ex post facto law is one that punishes as a crime an act previously committed, that: 1) was innocent when done; 2) makes more burdensome the punishment for a crime, after its commission; or 3) deprives one charged with a crime of any defense available at the time the act was committed. State v. Thiel, 188 Wis. 2d 695, 524 N.W.2d 641 (1994).

Retroactive application of a new statute of limitations, enacted at a time when the old limitations period has not yet run, does not violate the ex post facto clause. State v. Haines, 2003 WI 39, 261 Wis. 2d 139, 661 N.W.2d 72, 01-1311.

In any challenge to a law on double jeopardy and ex post facto grounds, the threshold question is whether the ordinance is punitive, as both clauses apply only to punitive laws. Courts employ a two-part “intent-effects” test to answer whether a law applied retroactively is punitive and, therefore, an unconstitutional violation of the double jeopardy and ex post facto clauses. If the intent was to impose punishment, the law is considered punitive and the inquiry ends there. If the intent was to impose a civil and nonpunitive regulatory scheme, the court must determine whether the effects of the sanctions imposed by the law are so punitive as to render them criminal. City of South Milwaukee v. Kester, 2013 WI App 50, 347 Wis. 2d 334, 830 N.W.2d 710, 12-0724.

In evaluating a claim brought under the contract clause, the court first considers whether the contested state legislation has operated as a substantial impairment of a contractual relationship. This inquiry has three components: 1) whether there is a contractual relationship; 2) whether a change in law impairs that contractual relationship; and 3) whether the impairment is substantial. If the legislative act constitutes a substantial impairment to a contractual relationship, it will still be upheld if a significant and legitimate public purpose for the legislation exists. If a significant and legitimate purpose exists for the challenged legislation, the question becomes whether the legislature’s impairment of the contract is reasonable and necessary to serve an important public purpose. Madison Teachers, Inc. v. Walker, 2014 WI 99, 358 Wis. 2d 1, 851 N.W.2d 337, 12-2067.

For a legislative enactment to be considered a contract, the language and circumstances must evince a legislative intent to create private rights of a contractual nature enforceable against the state. This requires the court, when reviewing a particular legislative enactment, to suspend judgment and proceed cautiously both in identifying a contract within the language of a regulatory statute and in defining the contours of any contractual obligation. Madison Teachers, Inc. v. Walker, 2014 WI 99, 358 Wis. 2d 1, 851 N.W.2d 337, 12-2067.

Under Calder, 3 U.S. 386 (1798), “every law that alters the legal rules of evidence, and receives less, or different, testimony, than the law required at the time of the commission of the offense, in order to convict the offender,” is a prohibited ex post facto law. A post-offense change in the law making hearsay evidence admissible at a preliminary hearing did not violate a defendant’s ex post facto rights. The hearing is not held “in order to convict the offender,” but rather to determine if probable cause exists to bind over a defendant for trial, at which the decision whether to convict occurs. State v. Hull, 2015 WI App 46, 363 Wis. 2d 603, 867 N.W.2d 419, 14-0365.

To determine whether a statute is punitive, the court applies the intent-effects test. The second part of the intent-effects test requires the court to examine the effect of the statute. Seven factors guide the court’s analysis of whether the statute actually punishes a defendant: 1) does the statute involve an affirmative disability or restraint; 2) has the sanction at issue historically been regarded as punishment; 3) will the sanction be imposed only after a finding of scienter; 4) does the statute promote the traditional aims of punishment — retribution and deterrence; 5) is the behavior to which the sanction applies already a crime; 6) is there an alternative purpose to which the sanction may be rationally connected; and 7) is the sanction excessive in relation to the alternative purpose assigned. State v. Williams, 2018 WI 59, 381 Wis. 2d 661, 912 N.W.2d 373, 16-0883.

A statute is an ex post facto law only if it imposes punishment. In Muldrow, 2018 WI 52, the court determined that neither the intent nor the effect of lifetime global positioning system (GPS) tracking is punitive. Thus, GPS tracking does not violate the ex post facto clause. Kaufman v. Walker, 2018 WI App 37, 382 Wis. 2d 774, 915 N.W.2d 193, 17-0085.

Discussing constitutionality of rent control. 62 Atty. Gen. 276.

The dismissal of an appeal for lack of prosecution in a condemnation action did not violate the condemnee’s right to just compensation. Taylor v. State Highway Comm., 45 Wis. 2d 490, 173 N.W.2d 707.

The total rental loss occasioned by a condemnation is compensable, and a limitation to one year’s loss was invalid. Luber v. Milwaukee County, 47 Wis. 2d 271, 177 N.W.2d 380.

A prohibition against filling in wetlands pursuant to an ordinance adopted under ss. 59.971 and 144.26 [now ss. 59.692 and 281.31] does not amount to a taking of property. Police powers and eminent domain are compared. Just v. Marinette County, 56 Wis. 2d 7, 201 N.W.2d 761.

A special assessment against a railroad for a sanitary sewer laid along the railroad’s right-of-way, admittedly of no immediate use or benefit to the railroad, did not constitute a violation of this section. Soo Line RR. Co v. Neenah, 64 Wis. 2d 665, 221 N.W.2d 907.

In order for the petitioner to succeed in the initial stages of an inverse condemnation proceeding, it must allege facts that, prima facie at least, show there has been either an occupation of its property under s. 32.10, or a taking, which must be compensated under the constitution. Howell Plaza, Inc. v. State Highway Comm., 66 Wis. 2d 720, 226 N.W.2d 185.

The owners of private wells ordered by the department of natural resources to seal them because of bacteriological danger are not entitled to compensation because such orders are a proper exercise of the state’s police power to prevent a public harm, for which compensation is not required. Village of Sussex v. Dept. of Natural Resources, 68 Wis. 2d 187, 228 N.W.2d 173.

There must be a “taking” of property to justify compensation. DeBruin v. Green County, 72 Wis. 2d 464, 241 N.W.2d 167.

Condemnation powers are discussed. Falkner v. Northern States Power Co., 75 Wis. 2d 116, 248 N.W.2d 885.

Ordering a utility to place its power lines under ground in order to expand an airport constituted a taking because the public benefited from the enlarged airport. Public Service Corp. v. Marathon County, 75 Wis. 2d 442, 249 N.W.2d 543.

For inverse condemnation purposes, a taking can occur absent a physical invasion only when there is a legally imposed restriction upon the property’s use. Howell Plaza, Inc. v. State Highway Comm., 92 Wis. 2d 74, 284 N.W.2d 887 (1979).

The doctrine of sovereign immunity cannot bar an action for just compensation based on the taking of private property for public use even though the legislature has failed to establish specific provisions for recovery of just compensation. Zinn v. State, 112 Wis. 2d 417, 334 N.W.2d 67 (1983).

Zoning classifications may unconstitutionally deprive property owners of due process of law. State ex rel. Nagawicka Is. Corp. v. Delafield, 117 Wis. 2d 23, 343 N.W.2d 816 (Ct. App. 1983).

Ordering a riparian owner to excavate and maintain a ditch to regulate a lake level was an unconstitutional taking of property. Otte v. DNR, 142 Wis. 2d 222, 418 N.W.2d 16 (Ct. App. 1987).

The operation of this section is discussed. W.H. Pugh Coal Co. v. State, 157 Wis. 2d 620, 460 N.W.2d 787 (Ct. App. 1990).

A taking by government restriction occurs only if the restriction deprives the owner of all or practically all use of property. Busse v. Dane County Regional Planning Comm., 181 Wis. 2d 527, 510 N.W.2d 136 (Ct. App. 1993).

A taking claim is not ripe for judicial review until the government agency charged with implementing applicable regulations has made a final decision applying the regulations to the property at issue. Taking claims based on equal protection or due process grounds must meet the ripeness requirement. Streff v. Town of Delafield, 190 Wis. 2d 348, 526 N.W.2d 822 (Ct. App. 1994).

Damage to property is not compensated as a taking. For flooding to be a taking it must constitute a permanent physical occupation of property. Menick v. City of Menasha, 200 Wis. 2d 737, 547 N.W.2d 778 (Ct. App. 1996), 95-0185.