i think this steps will help you....first tell him 2 apply for a visiting visa and make sure his parents are still in nigeria or he has wifes n kids any of  these will assure those embassy pple dat he will come back.send an invitation letter to his mail box askin him to come 2 u.s 4 ur weddin.let im print it out n also send im an ivitation card thru post or d.h.l. give im ur statement of account.all these will definiteley get im a visa.u can contact me 4 more ifo