Modifies provisions relating to the circuit court of Cole County, including its appellate district and venue of certain cases

HB 3054 changes where certain lawsuits must be filed in Missouri. It requires that any case challenging the validity of Missouri laws - such as disputes over whether a statute was properly enacted or a constitutional provision is valid - must be filed in Cole County. For personal injury and similar cases (tort cases), the bill sets new rules: if the injury occurred in Missouri, the case must be filed in the county where the injury happened; if outside Missouri, filing location depends on whether the defendant is a corporation or individual and the plaintiff's residence. The bill also updates definitions of "principal place of residence" to clarify venue rules for other cases.