some countries do not even allow new citizens to enter their country.
             If one wishes to leave the U.S. to go to another country for permanent residency, they must fill out a form of notice of the intent to leave the country and give up their U.S. residence, and then complete what they need to do to become a registered citizen of that country.
             (b)American citizenship entails the rights listed in the bill of rights:
             Amendment I: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.
             Amendment II: A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.
             Amendment III: No soldier shall, in time of peace be quartered in any house, without the consent of the owner, nor in time of war, but in a manner to be prescribed by law.
             Amendment IV: The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
             Amendment V: No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a grand jury, except in cases arising in the land or naval forces, or in the militia, when in actual service in time of war or public danger; nor shall any person be subject for the same offense to be twice put in jeopardy of life or limb; nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for pu...