Tobin Mueller v. Rick Raemisch

POSNER, Circuit Judge.

Before us are cross-appeals in a case in which two convicted sex offenders challenge aspects of Wisconsin’s statutory scheme of sex offender registration, notification, and monitoring as violating the prohibition in Article I, section 10 of the federal Constitution against states’ enacting ex post facto laws, that is, retroactive criminal punishments. The scheme, which we’ll call the monitoring act, was enacted after the plaintiffs committed and were convicted of the sex offenses that made them subject to it, though before they’d finished serving their sentences.

The…