Originally Posted by
Guy Betsy
Its ok. If they ask, they show your other passport.
I have an ASEAN passport too in addition to my Canadian one. And it is handy travelling around the ASEAN regions that require $ for their visas.
Could the officer think that you're trying to hide something by using different passports?
Also, dual or multiple citizenships are not tolerated in many countries, so that may lead to complications if they find out.