All countries
Can You Hold Dual Citizenship With the U.S. and Another Country?
The U.S. side
U.S. law doesn't require a U.S. citizen to choose between U.S. citizenship and another nationality. U.S. law also doesn't require permission from any U.S. agency to acquire a foreign citizenship by birth, descent or naturalization. Source: U.S. Department of State
Dual nationals owe allegiance to both countries, must obey the laws of both, and may get more limited U.S. consular help in the country of their other nationality. Source: U.S. Department of State
The other country's side
Since June 27, 2024, German nationals can acquire a foreign citizenship on application without losing German citizenship. Source: German Federal Foreign Office
Poland allows it, but a Polish citizen with another citizenship has the same rights and duties toward Poland as someone who is only Polish, and can't rely on the other citizenship before Polish authorities. Source: Polish Citizenship Act, art. 3
We're still verifying the official positions for Canada, Ireland and Italy and will add them here.