One of the advantages of dual citizenship is the ease of travel to different countries by having more than one passport. If one country has restrictions on travel to another country, you may be able to access your desired destination by using your other passport if your second country does not have restrictions to that particular destination. Another example may be seen in the rise of anti-American sentiment in some parts of the world, whereas individuals who are passport carrying citizens of other nations may be able to travel more freely. Also, dual citizenship allows you to obtain a job abroad more easily without having to go through additional paperwork and permits.
Another benefit of dual citizenship includes the ability to work and conduct business in different countries without having to apply for special visas or go through other paperwork. A dual citizen can own and invest in property in more than one country. If you are employed with a multinational corporation, having dual citizenship can be an advantage in staying with that corporation and moving up the corporate ladder. Perks may include paid business travel to other parts of the world, including the country of your other citizenship.
One disadvantage is the questionable long-term viability of dual-citizenship. There is a chance that either the U.S. State Department or the state department of your other nationality could change its policies regarding dual-citizens at will. U.S. State Department guidelines on dual citizenship are administrative policies that can change with new administrators and do not require Congress to make or renounce any laws. Also you face the chance that the other country may forbid you to have another passport in addition to one belonging to that country at the same time.
While visiting the country of your second citizenship, you may have legal obligations to pay taxes or serve in the armed forces if a situation arose where either of the two became compulsory. In some cases, however rare, dual citizens may be subject to paying taxes in both countries. According to the U.S./ Department of State, legal claims by other countries on U.S. dual citizens have the potential to conflict with U.S. law. For U.S. citizens, dual citizenship may also limit the ability of the U.S. government to assist an individual who is abroad.