The following is written by and according to the U.S. Department of Labor and particular to the licensure and certification of registered nurses.
Licensure and certification. In all States, the District of Columbia, and U.S. territories, students must graduate from an approved nursing program and pass a national licensing examination, known as the NCLEX-RN, in order to obtain a nursing license. Nurses may be licensed in more than one State, either by examination or by the endorsement of a license issued by another State. The Nurse Licensure Compact Agreement allows a nurse who is licensed and permanently resides in one of the member States to practice in the other member States without obtaining additional licensure. In 2006, 20 states were members of the Compact, while 2 more were pending membership. All States require periodic renewal of licenses, which may require continuing education. Certification is common, and sometimes required, for the four advanced practice nursing specialties-clinical nurse specialists, nurse anesthetists, nurse-midwives, and nurse practitioners. Upon completion of their educational programs, most advanced practice nurses become nationally certified in their area of specialty. Certification also is available in specialty areas for all nurses. In some States, certification in a specialty is required in order to practice that specialty. Foreign-educated and foreign-born nurses wishing to work in the United States must obtain a work visa. To obtain the visa, nurses must undergo a federal screening program to ensure that their education and licensure are comparable to that of a U.S. educated nurse, that they have proficiency in written and spoken English, and that they have passed either the Commission on Graduates of Foreign Nursing Schools (CGFNS) Qualifying Examination or the NCLEX-RN. CGFNS administers the VisaScreen Program. (The Commission is an immigration-neutral, nonprofit organization that is recognized internationally as an authority on credentials evaluation in the health care field.) Nurses educated in Australia, Canada (except Quebec), Ireland, New Zealand, and the United Kingdom, or foreign-born nurses who were educated in the United States, are exempt from the language proficiency testing. In addition to these national requirements, foreign-born nurses must obtain state licensure in order to practice in the United States. Each State has its own requirements for licensure. For the source and more detailed information concerning your request, click on the related links section (U.S. Department of Labor) indicated below this answer box.
If by "RN" you mean registered nurse, Yes.
Yes, a nurse pracitioner needs a license in the US.
Yes I need a babynurse license.
Yes they need to qualify and some areas need a certificate to practice
YES
no
You do not need to. The license and certificate will be issued by Romania.
a registered nurse license issued by the state board of nursing from the state/states in which he/she practices
No
You need a marriage certificate from the parish. It will be issued after the marriage license has been executed and returned to the court house.
No you dont you can become a singer a a young age for example Miley Cyrus.
No, but if you are under 14, you need a training certificate.