Do Jewish-Americans feel the need to hide their backgrounds?

I just finished a book about a Dutch Auschwitz survivor (Dancing with the enemy by Paul Glaser) and several times he mentioned how his family tried to hide their Jewish background, into the 21st century. His brother was/is worried it would have an impact on his business contacts. This edition was published in 2013-14.

Is this a prevalent outlook among Jewish Americans?

-I’m a generic white dude from Seattle/Boise, I haven’t had a lot of interactions with Jewish communities. It’s never occurred to me that such a thing might have an impact here…