Dual nationality is that a person is legally a citizen of two countries. They will have legal rights and duties in both countries. While dual nationality has some advantages, such as an easy stay in several countries. B and access to government programs, there are many legal considerations that can make life more complicated. For example, dual citizens may have tax obligations in more than one country or may be subject to residency obligations between two countries of origin. Not all countries allow dual nationality, so you need to contact the countries you need for citizenship. Persons of multiple nationality may be considered to have dual loyalty, which have the potential to act at odds with the interests of a government, which can lead to difficulties in acquiring public employment if a security clearance may be necessary. As a general rule, people who have multiple nationalities for one of these reasons pass multiple nationality on to their children. In such cases, German law allows children to maintain their membership in a multiple state for a long time.
However, persons with multiple nationalities may renounce their German nationality (Article 26 of the Nationality Act). A 2007 study published in the Journal of Politics examined whether the admission of dual nationality hinders cultural assimilation or social integration, increases the separation of the political process and lowers national or civil identity/cohesiveness.  The United States does not officially recognize dual nationality. But it did not oppose it either, either legally or politically. As a general rule, no American loses his or her citizenship by assuming responsibility for citizenship in another country. This also applies where the responsibility is to travel with a foreign passport, to vote in elections in another country or to run for public office in another country or to participate in public office. In most cases, the U.S. authorities do not care if another country is asking you as a citizen. Sometimes dual nationality is automatic (z.B.
when a child is born in the United States to foreign parents). At other times, however, the process can take many years and be extremely expensive and complicated. This may deter some people from pursuing dual nationality. A country that allows dual nationality still cannot recognize the other nationality of its nationals on its own territory (for example. B with regard to entry into the country, national service, obligation to vote, etc.).