This is sort of a throwback Thursday (#tbt) kind of thing: A few years back, I penned a handful of essays on Japanese American Legal History for an earlier version of the Cynthia Leitich Smith Children’s Literature Resources; now, revised (slightly), they are available on my web site!
Being of Japanese and German descent ("hapa"), I originally wrote these essays out of a concern that, to the extent that the history of Japanese Americans was known, such knowledge focused almost entirely on the Internment, at the expense of other aspects of the societal and legal regime that affect, and have affected, Japanese Americans.
Although the essays include case cites, they are intended to be readable by a general audience. :-).
Here's the link to the splash page.
Japanese American Legal History (General) discusses immigration and naturalization issues, as well alien land laws. Japanese American Legal History (The Internment) discusses the World War II internment of Japanese Americans and the related Supreme Court cases. Finally, Japanese American Legal History (Enemy Aliens and Habeas Corpus) discuss other legal aspects of internment and treatment of enemy aliens and habeas corpus generally.
For more general information on Japanese American history, check out the Japanese American National Museum in Los Angeles.