Dual nationality can occur as the result of a variety of circumstances. The automatic acquisition or retention of a foreign nationality, acquired, for example, by birth in a foreign country or through an alien parent, does not affect U.S. citizenship. It is prudent, however, to check with authorities of the other country to see if dual nationality is permissible under local law. Dual nationality can also occur when a person is naturalized in a foreign state without intending to relinquish U.S. nationality and is thereafter found not to have lost U.S. citizenship: the individual consequently may possess dual nationality. WHILE RECOGNIZING THE EXISTENCE OF DUAL NATIONALITY AND PERMITTING AMERICANS TO HAVE OTHER NATIONALITIES, the U.S. Government also recognizes the problems which it may cause. Claims of other countries upon dual-national U.S. citizens often place them in situations where their obligations to one country are in conflict with the laws of the other. In addition, their dual nationality may hamper efforts to provide U.S. diplomatic and consular protection to them when they are abroad.
Dual-nationals are permitted, but not encouraged.