"Unions for teachers, firefighters and other public employees sued to stop [New Jersey Gov. Chris] Christie, seeking full payment into a pension system underfunded by $38 billion. Christie ... said an unanticipated drop in revenue forced him to trim pension payments to balance the budget, as required by law. 'The governor complied with the statutes to the extent he determined to be reasonable given the nature and extent of the emergency,' [Superior Court Judge Mary] Jacobson ruled. 'He took a measured response compelled by the exigencies of the circumstances.'"