What do you need to become an international private investigator?
A private jet and a really cool name like Brock Hunter. The reality of life is that only in very very (have I said very?) unusual circumstances would a private investigator be required to personally travel overseas. It's unnecessary for the client's budget and in most cases, the task would be subcontracted out to a local agency - for many reasons not only costs; such as local knowledge, contacts, understanding of in-country laws and language.