William Our friend Stuart Iles shared a post regarding dual nationality. I noted that my kids have encountered no problems - they present Japanese immigration officials with their Japanese passports and US officials with their US passports and none have questioned why there are only exit/entrance stamps for that single country, not others. JUST DO NOT SHOW BOTH AT ONCE. Japan really tipped its hand with the case of former Peruvian president Fujimori: He had to have Peruvian nationality to assume the office but later claimed Japanese nationality when push came to shove. This was accepted by a Japanese court, thus acknowledging dual nationality. Hearing of experiences from our readers would be of interest.