Most Americans do not view Judaism in racial or genetic terms. The WWII experience of discovering and liberating the camps was not an enjoyable experience. And the US experience with our own racial past tends to make a lot, an increasing lot, of Americans reject the racial attitudes of the past. So she chose her father's and grand father's religion. No big deal.
UN to hold off on separate Afghan bombing probe for now (Reuters)
from the article: Expanding the tribe in the home of the brave