# When is a US citizen required to prove it?

**URL:** <https://boards.straightdope.com/t/when-is-a-us-citizen-required-to-prove-it/537525>\
**Category:** Factual Questions\
**Created:** [April 27, 2010, 2:42pm UTC](https://boards.straightdope.com/t/when-is-a-us-citizen-required-to-prove-it/537525 "2010-04-27T14:42:52Z")\
**Posts on this page:** 1\
**Showing post:** 33

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**Author:** ![Fear\_Itself](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fear_itself/32/19637_2.png) [@Fear\_Itself](https://boards.straightdope.com/u/Fear_Itself)\
**Post date:** [April 28, 2010, 9:17pm UTC](https://boards.straightdope.com/t/when-is-a-us-citizen-required-to-prove-it/537525/33 "2010-04-28T21:17:04Z")

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> [@tschild](#):
>
> What about voting?

My ex was not a citizen (had a green card), but had no problem registering to vote (California). She voted in at least one presidential election that I was aware of, but she claimed she had always voted.

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