http://www.mks.com/~richw/dualcit.html
The FAQ for Dual Citizenship and US Law site provides questions and answers about US Citizenship. Topics include--Is Dual Citizenship Possible?, Foreign Military service, Having Two Passports At Once, Reinstatement of Lost US citizenship, and more. The site also provides links to US Law on Citizenship, Supreme Court Decisions on Dual Citizenship, and State Department Policies on Dual Citizenship.