TOPEKA, Kan. (AP) — Six trial-court judges in Kansas filed a lawsuit Friday against the state Legislature in hopes of forcing it to increase funding for the court system in a move certain to intensify majority Republicans' ongoing frustrations with the judiciary.

The judges filed their lawsuit directly with the Kansas Supreme Court, less than two hours after its new chief justice told The Associated Press that the high court's own proposal for a 12% increase in funding was "the tip of the iceberg" in meeting the judiciary's needs. The Supreme Court's repeated push for additional funds led one...