10 years agoOthers states’ law determines penalty in cross-border dispute — June 4, 2009 SPRINGFIELD — Out-of-state businesses that fail to comply with Illinois income withholding orders must be penalized according to the law of their own state, the Illinois Supreme Court held..At issue was which state’s laws should be used in applying a penalty against Knobias Inc, a Mississippi company that did not follow an Illinois order requiring it to withhold pay for unpaid child support.The Illinois Income …