I do actually, but in this context it doesn't really matter. Does any - not first generation immigrant - say I am 10% Irish, 10% Jewish from Russian Empire, 50%

I do actually, but in this context it doesn't really matter. Does any - not first generation immigrant - say I am 10% Irish, 10% Jewish from Russian Empire, 50% Welsh and 30% Italian? Maybe some people do but in reality you say you are an American. And for most of the world that's how it sounds anyway.