[mhking]

U.S. law enforcement officials in Washington said the woman had dual American and German citizenship.

Treason?

[11B3]

Treason!

[grimalkin]

The Constitution of the United States, Art. III, defines treason against the United States to consist only in levying war against them, or in adhering to their enemies, giving them aid or comfort. This offence is punished with death. By the same article of the Constitution, no person shall be convicted of treason, unless on the testimony of two witnesses to the same overt act, or on confession in open court.

[aristeides]

I don't know if there's any U.S. caselaw on treason by dual nationals. There is, however, the UK case of William Joyce, a.k.a. Lord Haw Haw, who was convicted of treason and executed for making propaganda broadcasts for the Germans, even though he was a citizen of neutral Ireland. His possession of a British passport was held to be sufficient grounds for holding him potentially guilty of treason against the UK.