The J-1 Exchange Visitor Program [Research Scholar or Professor categories] should be used to bring in individuals who will "promote interchange of persons, knowledge, and skills, and the interchange of developments in the field of education, the arts and sciences." While it is not explicitly stated in the regulations, it is understood that the only way there can be an "interchange of knowledge" is for the Exchange Visitor to depart the United States upon completion of his/her program and return to "share" the knowledge/expertise s/he obtained while in exchange visitor status. The H-1B employment visa is simply a visa category which allows Temple University to hire non-immigrants who will "perform[s] services in a specialty occupation."