From what I gather from the stories I've read, there is only one stipulation in their Constitution that gives the governor the power to compel the state Senators to appear, but it doesn't state HOW. I think Wisconsin is screwed for now, but will hopefully adopt a Constitutional amendment addressing this abuse in the future. Fortunately we have an ironclad majority in Texas and there doesn't have to be a Dem anywhere in this hemisphere for us to pass a new law.