Invisible War has that same problem as Human Revolution when you shoot up the police station. If you murder Nicolette DuClare and Donna Morgan at the Black Gate facility, Chad just kinda... scolds you for it. He doesn't arrest you or see you as an enemy or anything, he just gets mad at you. He keeps working with you because he still needs a Denton, but realistically he could probably use Klara Sparks instead. He says he has reason to doubt her loyalty, but, come on. She has to be more trustworthy than Alex at that point.