A nurse who is already licensed in another state or territory may apply for a Missouri license by endorsement. Licenses are granted by each state, so a nurse must apply for and receive a license in every state in which the nurse practices unless that state is a member of the nurse licensure compact.You can find out more about the nurse licensure compact at http://www.ncsbn.org. nurse who is already licensed in another state or territory may apply for a Missouri license by endorsement. Licenses are granted by each state, so a nurse must apply for and receive a license in every state in which the nurse practices unless that state is a member of the nurse licensure compact.