[Tammy8]

Lots of people have dual citizenship. The U.S. does not recognize dual citizenship but Mexico and many other countries do. When someone says they have dual citizenship that is only valid in their “other” country.

[Kid Shelleen]

When was the last time Jorge voted in a Mexican election?

https://supreme.justia.com/cases/federal/us/356/44/case.html
Perez v. Brownell, 356 U.S. 44 (1958)
Held: It was within the authority of Congress, under its power to regulate the relations of the United States with foreign countries, to provide in § 401(e) that anyone who votes in a foreign political election shall lose his American citizenship, and the judgment is affirmed. Pp. 356 U. S. 45-62.