It is important to note that employment is expressly prohibited while on B2 status. In theMatter of Hall, 18 I&N Dec. 203 (BIA 1982), the Board held that a B2 nonimmigrant who worked as a missionary while only receiving money for room, board, other essential needs, and pocket change had violated his status.A university lecturer visiting the United States on B2 status is permitted to give a “brief, impromptu speech or take a short-term course as an incidental part of his or her visit to the country” [see Genco. Op.