Legal Question in Credit and Debt Law in Wisconsin

You can certainly sue him for breach of contract, possibly even from WI where the contract was presumably made. However, the next step of collecting on the judgment can be far more difficult, although simply having a docketing judgment on file will put continued pressure on the debtor to pay by acting as a lien against real estate in any WI county where the judgment is docketed, showing up on credit reports, allowing you to garnishee paychecks, etc. You need to consult with an experienced collection attorney ASAP. My comments in this online forum are offered for public educational purposes only and are not legal advice, nor do they create any attorney/client relationship between us. Even if I were advising you, the background information which you provided did not include sufficient detail to allow any sort of reliable advice upon which you should rely. Finally, I may be able to represent you if you contact my Racine office and make arrangements formally retain me. I represent clients throughout the state of WI.