The United Nations Convention Relating to the Status of Refugees governs the international rules and rights related to individuals granted refugee status and asylum. The Convention was originally approved at a special United Nations conference in July of 1951. The 1967 Protocol to the Convention provides an international definition for the definition of a refugee. According to the Protocol a refugee is an individual who due to a well-founded fear of being persecuted for reasons of race, religion, nationality, membership of a particular social group or political opinion, is outside is country of origin. The definition of a refugee in U.S. law under the Immigration and Nationality Act (INA) is aligned with the UN Convention. The agency within the UN that handles issues related to refugees under the Convention is the United Nations High Commissioner for Refugees (UNHCR). The UNHCR and the United States Citizenship and Immigration Services (USCIS) work closely in identifying and referring refugee cases for review. The UNHCR also carries a mandate for protecting and providing humanitarian assistance to persons of concern who do not meet the criteria for the definition of refugee but fall under the category of internally displaced persons (IDPs).