I find it the height of folly to enable a court officer (a bounty hunter returning a fugitive) a wide range of latitude for picking up a fugitive in the US, but then deny that bounty hunter the same protections when it comes to other countries.
Bounty hunters, in most states, aren't court officers, they're bondsmen employees. How can we dictate to other countries how to handle their laws? Very few countries have legalized bounty hunting, as far as their concerned it's kidnapping. And remember bounty hunting laws vary drastically from state to state, a bounty hunter licensed in one state (assuming that state has a licensing procedure) might not be allowed to operate in a different state (again depending on that stat's laws). Suddenly declaring they can operate internationally with complete disregard to local laws when they can't even operate throughout the US that way would never stand.