$10k for what looks like a few months work. Looks like a successful case of outsourcing, but the thought of private law enforcement, mercenaries intruding into people's lives and chasing people with guns doesn't sit very well with me. Who is responsible if everything goes wrong?
The responsible parties. "Everything" and "wrong" are utterly vague. But, assume you mean something like Mullen tries to escape and her bodyguard shoots him in the back. It would be up to local DA if they wanted to prosecute, perhaps including bounty hunter as accomplice. Mullen's family could sue for wrongful death.
tldr; laws don't magically disappear just cause bounty hunters are involved.
Of course, but suing an individual vs a government body has very different dynamics, plus the whole operation has less clear rules and responsibilities for the involved, not to mention training etc. I guess the victim/family would have a smaller chance of financial compensation. I'd rather have police be police, can we friendly disagree?