We are a nonprofit spiritual education organization. During the upcoming year we are planning to host several events in the U.S. centered around widely recognized spiritual leaders. The events will last a few days and culminate with a keynote address by the featured spiritual leader. Throughout each event we will promote and sell a variety of educational and promotional items. We also will solicit funding for our organization. To help make this a reality, we contacted a foreign national who has extensive experience in running these types of events for religious and spiritual organizations. We would provide only room and board and reimbursement for travel and incidental expenses for him and his family. Is there a visa that would allow him to come to the U.S. with his family for a year to do this?