Schneiderman v. United States
United States Supreme Court
320 U.S. 118 (1943)
Schneiderman (defendant) immigrated to the U.S. as a young child, joined a Communist youth organization as a teenager, filed his intent to become a citizen, joined the Communist Party's predecessor organization, and received full citizenship in 1927, later holding executive positions within the Communist Party. Years afterward, the government sought to cancel his citizenship, arguing his Communist Party membership showed he had not been genuinely attached to the principles of the Constitution when he was naturalized, given the Party's stated goal of dismantling the existing democratic system.
Whether the government may cancel a citizenship granted years earlier based on a citizen's desire for drastic change to the United States government or Constitution.