Why holding multiple passports is a legal minefield that can cost you your seat
Multiple citizenship is not a universal right but a patchwork of conflicting national laws. While it offers freedom to travel and work, it can trigger unexpected obligations, from mandatory military service to the loss of political eligibility. Understanding these nuances is essential for anyone navigating global mobility and national allegiance.
Citizenship is determined exclusively by national law, creating a landscape where states often hold contradictory views on allegiance. Historically, the feudal theory of perpetual allegiance meant nations refused to acknowledge a citizen's right to renounce their status. This led to international friction, such as the War of 1812, sparked by British impressment of sailors the UK still considered subjects despite their American naturalization. By the mid-20th century, dual nationality was widely prohibited, with many governments viewing it as a form of disloyalty comparable to bigamy.
The modern consensus has shifted, yet significant restrictions remain. Countries like Austria, Japan, and Singapore may automatically revoke citizenship if a national voluntarily acquires another. Even where dual citizenship is permitted, it is often limited by the Master Nationality Rule, which prevents a state from providing diplomatic protection to a person against another country where they also hold citizenship. This means that if you are a dual national, you may be subject to local laws—including conscription—in both countries, regardless of which passport you use to enter.
For the politically ambitious, multiple citizenship can be a career-ending liability. In Australia, the 2017–18 parliamentary eligibility crisis saw 15 members of Parliament forced to resign because they unknowingly held foreign citizenship. Similarly, Armenia, Colombia, and Israel restrict dual citizens from holding specific high-level offices. Even in countries that allow dual nationality, such as the Philippines, the rules can be granular; naturalized citizens may be barred from local elective offices while those who hold dual status by birth remain eligible. Navigating these requirements requires careful attention to the specific, often restrictive, statutes of each nation involved.
Source: Multiple citizenship
