Miami city administrators say they can balance the city’s $485 million operating budget without raising taxes, but it involves winning $40 million in union concessions. That may be easier said than done. Negotiations with the police union are stalling, Fraternal Order of Police President Armando Aguilar said. “I didn’t close the door, but I told them my ultimatum: I’m not willing to give up what we gave last year, and not what they want this year,” Aguilar said. Mayor Tomás Regalado said the city will likely have to declare financial urgency, a provision in state law that allows municipal leaders...