In the 1944 case of Ex Parte Mitsuye Endo, the U.S. Supreme Court unanimously ruled that loyal U.S. citizens could not be detained without cause during wartime, effectively ending Japanese internment during World War II. The case was brought by Mitsuye Endo, a Japanese-American woman who had been forcibly removed from her home and placed in an internment camp despite being a loyal citizen with no ties to Japan's military or government. The court held that while the government did have broad powers to protect national security during times of war, these powers did not extend to detaining individuals without evidence of disloyalty or subversive activity. This landmark decision underscored the importance of individual rights and civil liberties even in times of crisis.

In the case of Ex Parte Mitsuye Endo, 1944, there was no formal dissenting opinion. The Supreme Court unanimously ruled that loyal U.S. citizens could not be detained without cause during wartime and ordered the release of Mitsuye Endo, a Japanese-American woman who had been interned during World War II. However, while all justices agreed on this point, they differed in their reasoning behind it: some believed that the government lacked authority to detain loyal citizens under any circumstances; others argued that such detention might be justified in certain situations but found insufficient evidence to support it in this particular case.