Originally Posted by
Quokka
Why bother with a visa at all?
Wouldn't use of a XX-hour TWOV transit along with a return via another country (e.g. Japan, HKG, TPE, etc) provide enough time to do his presentation?
TWOV is for transit, not for business or employment. You would be better off checking no to the criminal history and at least getting the proper visa than being caught in a business conference with no visa in your passport if they were to decide to to passport checks outside the hotel / convention center.