Citizenship of the United States
A person who is considered a citizen by more than one nation has "dual citizenship". It is possible for a United States citizen to have dual citizenship; this can be achieved in various ways, such as by birth in the United States to a parent who is a citizen of a foreign country (or in certain circumstances the foreign nationality may be transmitted even by a grandparent) by birth in another country to a parent(s) who is/are a United States citizen/s, or by having parents who are citizens of different countries. Anyone who becomes a naturalized U.S. citizen is required to renounce any prior "allegiance" to other countries during the naturalization ceremony; however, this renunciation of allegiance renunciation of citizenship to those countries.
Romanian nationality law
In accordance with the Law on Romanian Citizenship of 1991, Romanian citizens currently have the right to hold dual citizenship. Romanian citizens who apply for dual citizenship are not required to establish their residency in Romania and, if accepted, are granted all the same rights as non-dual citizens. The Romanian policy on dual citizenship is irrelevant to other states policy. In order to successfully become a dual citizen of Romania, a person must also meet the requirements of dual citizenship in the other country. There have been cases in which applicants have successfully restored their Romanian citizenship and as a result, lost citizenship of another country. The Romanian state does not claim responsibility for the loss of citizenship to another state as a result of being granted dual citizenship by Romania.