"Miss Elg was born in Brooklyn, New York, on October 2, 1907. Her parents, who were natives of Sweden, emigrated to the United States sometime prior to 1906 . . . In 1911, her mother took her to Sweden . . . .
"In 1929, within eight months after attaining majority, [Miss Elg] obtained an American passport . . . . She then returned to the United States . . . .
"In April, 1935, Miss Elg was notified by the Department of Labor that she was an alien illegally in the United States, and was threatened with deportation. . . .
"We conclude that [Miss Elg] has not lost her citizenship in the United States . . . .
"The court below [properly] declared Miss Elg 'to be a natural born citizen of the United States.'"