idk, I see it the other way around actually. if you kill someone in another country, that's still bad, but it's not clear why the US government should be the entity that holds you accountable for it. seems more appropriate to turn you over to that country's government upon request.

whereas if you bribe public officials in other countries as normal business practice, that might give you an advantage over other companies that also operate in the US. if they have to also engage in bribery to compete with you, that seems like a much more direct harm to another US entity.