A court first found her guilty of failing to declare that she had a U.S. passport, mandatory under Russian law, and fined her.

Source: https://en.apa.az/cis-countries/russia-opens-new-criminal-case-against-us-radio-free-europe-journalist-419171

He also claimed to have surrendered his U.S. passport on November 15, 2018, but it appears that he has been engaged in financial activities with the U.S. at least until September 2021.

Source: http://bangladeshchronicle.net/bangladesh-lawmaker-sues-attorney-for-questioning-his-wealth/

John Shing-Wan Leung, who has a U.S. passport and permanent residence in Hong Kong, was convicted by the court in the eastern city of Suzhou, near Shanghai, on Monday.

Source: http://nigeriancurrent.com/2023/05/15/spying-chinese-court-sentences-78-year-old-u-s-citizen-to-life-in-prison/