If you marry him there. Come back to the US, you can petition for him to immigrate as your spouse. If he comes on a tourist visa and his intent is determined to be other than that of a tourist, like getting married here, he can be denied entry for fraudulently obtaining a visa. If he files for a tourist visa, after you are married, as long as he does not lie about you being here and his coming as a tourist to spend time and visit the US, he should be fine as long as he goes home. If he does this while immigration papers are in process, things might get sticky. Make sense?

