I read in most accounts that he was actually a US citizen who emigrated from Vietnam 27 years ago (??).
I know some here are desperately hoping that this guy be a h1 visa holder (maybe not you, CC).
He was an IBM employee...this area is the one losing jobs to India...IBM is getting rid of Americans and essentially moving to India...this is not a company that needs to cut costs either...they did ok last year... let them go and then tariff the hell out of them.