By nineteen forty-four, Enrico Fermi had become a citizen of the United States.

VOA: special.2009.06.14

Think of the Bill of Rights here in the United States; think of the French Declaration on the Rights of Man and the Citizen.

想想美国的《人权法案》,想想法国的,《人权宣言》

普林斯顿公开课 - 人性课程节选

Now if you were not born in the United States, you may still be, under definition, a natural born US citizen if you're born outside this United States, both of your parents are citizens of the United States and at least one parent has lived in the United States.

现在如果你不是出生在美国，你可能,即使你出生在美国以外的地方,只要你的父母都是美国公民,而且至少一个居住在美国,那么按照定义。

麻省理工公开课 - 计算机科学及编程导论课程节选

He says that's not fair. "Whether it's gay marriage, whether it's making changes in the community or making changes on a broad scale - if I'm a citizen of the United States, it affects me as well."

VOA: standard.2010.03.25

Theodore Roosevelt, who later became president of the United States, called Riis the most useful citizen in New York City.

VOA: special.2010.08.01

Mister Boyle was born in Canada and is a citizen of Canada and the United States.

VOA: special.2009.12.08