@Dex Stewart
Actually, nothing, really. But some reporter really pissed him off about it once. And Bruce got more and more angry about it. Honestly, I can understand these guys. I personally love it when Hollywood stars are not ashamed of their German origins. See Sandra Bullock.
But if a US reporter doesn’t understand the difference between Germany and Austria, as in the case of Christoph Waltz (Inglourious Basterds), for example, then I can certainly understand that some stars prefer to be recognized simply as Americans. Or if they do not want to talk about their origins at all. ;-)