Running for public office in a foreign country, taking an oath of allegiance to a foreign government, or serving in a foreign military can potentially lead to loss of U.S. citizenship

Committing certain acts like treason, attempting to overthrow the U.S. government, or formally renouncing citizenship can result in loss of U.S. citizenship.

Naturalized citizens may lose their citizenship if it's discovered they lied or concealed material facts during the naturalization process, or if they committed certain crimes or acts against the U.S. interest