If the US had provided a safe way for him to expose the wrongdoing of his employers, such that he could do so without fear of being persecuted, he could have stayed on US soil the whole time.
Now, because he knows he's going to end up in jail (or worse) if & when he returns to the US, he ends up having to spend time in countries which are likely to want to interrogate him for all the information he has.
If the US had provided a safe way for him to expose the wrongdoing of his employers, such that he could do so without fear of being persecuted, he could have stayed on US soil the whole time.
Now, because he knows he's going to end up in jail (or worse) if & when he returns to the US, he ends up having to spend time in countries which are likely to want to interrogate him for all the information he has.
Nice move, US.