The state Justice Department's second-in-command is arguing before the state Supreme Court that a Madison judge exceeded her authority when she struck down Gov. Scott Walker's contentious union law.
Dane County District Attorney Ismael Ozanne, a Democrat, filed a lawsuit in March alleging GOP legislators convened a committee on the measure without the proper public notice. Judge Maryann Sumi blocked the law from taking effect while she considered the case and last week declared the law void.
The Supreme Court heard oral arguments Monday on the Department of Justice's request to take the case. Deputy Attorney General Kevin St. John told the justices that Sumi's move is unprecedented and she improperly interrupted the legislative process.
Ozanne is expected to make his arguments later Monday morning.