Vetting H-1B contract worker with no credit history as tenant?

[Johann Jells]

There's a lot of Indian H-1B workers here, and I've rented to them before and they've been fine (except for the couple who walked above our heads VERY heavily). But this applicant just got here and even has no SS# yet. Any advice on how to do the usual due diligence with no credit history? He can provide plenty of employment documentation.