A judge who ordered the president of Chicago’s police officers’ union to stop publicly encouraging his members to disobey the city’s COVID-19 vaccine mandate has refused the union’s request to recuse herself from the case.The union wanted Cook County Judge Cecilia Horan to recuse herself because of what its attorney, Joel D’Alba, called the “appearance of impropriety.” The law firm where Horan was a partner before she became a judge had been involved with a task force that helped …