If I can still remember the history I did some times back, then the Second World War seems like it was very devastating to many countries. During this period, Japan attacked China and they were using up their resources. America placed an embargo on Japan which made Japan to face some difficulties in getting material to continue with the war. Japan then turn to Dutch East Indies for raw material. Japan knew quite well that their action on Dutch East Indies will attract America and they decided to attack Peal Harbor in order to disturbed America from stopping them from continuing with Dutch East Indies.
All these made America to respond by capturing those Japanese in America and detaining them. The worst part is that most of them were children who were even American citizens. In this case, one can say that sometimes when people are angry, they turn to take some decisions without thinking. It did not make any sense for the U S to be detaining Japanese who are already Citizens. They argued that those Japanese were considered as potential threats to national security. Yes one can understand but not kids.
When I read that article, I felt terrible because I did not know before that kids were also picked up in that case. I began to imagine if I were in their position, how would I have felt? I have been in the country for long and I gave birth to my kids here. They are citizen as well as I and if such a thing were going to happen to me and my kids, I will be the saddest person in the world. Sometimes, it is really hard to accept certain decisions being taken. We turn to ask a lot of questions in such cases.
On the other hand, Americans were just angry and had to react. So they just did what they thought could work best for them.