> [4] Unless you mean to tell us that there was some self-sustaining, secret isolated enclave of Europeans that have lived on Hawai'i prior to 1788, that only intermarried between eachother, I would expect that after a century and a half of intermarriage with native Hawai'ians, nobody either in 1920, or today would ever be able to tell the difference between that 'European' and a native.

Race-based laws are nonsense, because the concept of "race" itself is a pseudoscientific nonsense. There's no objective way to tell a "race" of many (or maybe even most?) people. Take President Obama for example. What race was he?