In the 1944 case Giese v. United States, the Supreme Court ruled on a matter concerning citizenship and military service. The petitioner, Giese, was born in Germany but had lived in America since childhood after his parents immigrated. He became a naturalized citizen through his father's naturalization when he was still a minor. However, during World War II he renounced his U.S citizenship while serving as an American soldier abroad and was subsequently convicted of desertion by court-martial. Giese challenged this conviction arguing that under Section 2 of the Nationality Act of 1940 which states that any person who is nationalized overseas or enters armed forces during wartime can lose their nationality if they leave said armed forces without permission before termination of hostilities; did not apply to him because he wasn't "naturalized" overseas but rather automatically derived it from his father's process within U.S borders. The Supreme Court disagreed with Giese’s interpretation ruling unanimously against him stating that Congress intended for all those gaining citizenship other than by birthright (including derivative citizens like himself) to be subject to provisions outlined in Section 2 regardless where their naturalization occurred.

In the dissenting opinion for GIESE v. UNITED STATES, Justice Murphy argued that the majority's decision was a misinterpretation of Section 346(a) of the Nationality Act of 1940. He believed that this section should not be used to strip an individual of their citizenship based on voting in a foreign political election unless it could be proven beyond reasonable doubt that they intended to relinquish their U.S. nationality by doing so. In his view, Mr.Giese had voted in good faith under German law and without any intention to renounce his American citizenship; therefore, he should not lose it as per the majority ruling. Justice Murphy also expressed concern about potential misuse or overreach if such broad interpretation were allowed - potentially leading to loss of citizenship for minor infractions like failing to pay taxes or serving in foreign military during peacetime out of necessity rather than choice.