Superman has renounced his U.S. citizenship in the newest issue of Action Comics: “‘Truth, justice and the American way’ it’s not enough anymore. The world’s too small, too connected.” Read more.
He immigrated to the U.S. from Krypton, but it’s unclear when because he has aged since the first comic book was published.
Fox News and Donald Trump are demanding his birth certificate, but the Man of Steel has ignored their demands to date.