You probably have heard by now because everyone is talking about it, even FoxNews, but there was a major event that happened in Action Comics #900 which was released yesterday. No, I'm not talking about the continuation of the Regin of Doomsday (ugh). Superman renounced his U.S, citizenship.
Here's what happened in the story. Superman showed up in Tehran to non-violently support the protesters demonstrating against the Iranian regime. Tthe Iranian government construed his actions as the will of the American Government.