Afroyim v. Rusk

Afroyim v. Rusk, 387 U.S. 253 (1967), is a major United States Supreme Court case in which the Court ruled that citizens of the United States may not be deprived of their citizenship involuntarily. The U.S. government had attempted to revoke the citizenship of Beys Afroyim, a Polish-born man, because he had cast a vote in an Israeli election after becoming a naturalized U.S. citizen. The Supreme Court decided that Afroyim's right to retain his citizenship was guaranteed by the Citizenship Clause of the Fourteenth Amendment to the Constitution. In so doing, the Court overruled one of its own precedents, Perez v. Brownell (1958), in which it had upheld loss of citizenship under similar circumstances less than a decade earlier.

The Afroyim decision opened the way for a wider acceptance of dual (or multiple) citizenship in United States law. The Bancroft Treaties—a series of agreements between the United States and other nations which had sought to limit dual citizenship following naturalization—were eventually abandoned after the Carter administration concluded that Afroyim and other Supreme Court decisions had rendered them unenforceable.