First, make sure to ask the right questions during the hiring process so that you know, without crossing any discrimination lines, whether a candidate requires "sponsorship" and second, establish a relationship with an immigration attorney so that you can bring good candidates to his or her attention to determine whether sponsorship is possible and worthwhile.
The permissible questions are as follows: Will you now or in the future requirement immigration/visa sponsorship to work for us? If the candidate answers yes, then you can ask about his or her immigration status. If the candidate answers no, then you can't.
