> Non-citizens, too?

The general rule is that anyone, citizen and non-citizen, can make a FOIA request.[1] However, the law as interpreted by the Supreme Court only provides a guarantee to open access for US citizens when making a request of a federal agency. For requests of a state agency, only US citizens residing in that state are guaranteed open access.[2]

[1]: http://www.foia.gov/faq.html#who

[2]: https://www.eff.org/deeplinks/2013/05/scotus-foils-foia-advo...