Right now it works like this: if the President stays in his spawn for longer than a minute, the spawnzone disables and everyone inside it loses their spawn protection. From that moment, you're allowed to kill the president. Securities that respawn after the zone has been disabled, will get the old 15 seconds of spawn protection, with one big difference: as soon as they damage someone, they lose their spawn protection. I think that allows the secus to get out safely when they want to, but also prevents them to shoot everyone with their spawn protecion. Also, you shouldn't be receiving the warning dialog when their spawn zone has been disabled.