What would be the best course of action to sue them for non-payment? 

Social security number is definitely not required for non-payment for eviction in NJ.

. $40k will not get you a non owner occupied San Diego property unless you find some unlikely alternate financing.

All it takes is one non-payment or messy eviction to set you back months and even years in cash flow.

If the costs for home buying goes up for first time home buyers then the results will probably be that less starter homes will be moving in the market unless non profits and the sort step up.

Lots of medical in KC - hospitals, medical school, etc.

In many cases, it weakens the lender's position as they did not underwrite the buyer and an owner-occupant tends to pay better than non-owner-occupants.

If you're certain the type of renter you're going to get are traveling medical professionals, you know they're on short term contracts (typically 13 weeks).

Well it looks like non-profits are exempt....So I suppose Dope Traffickers will just buy an ongoing concern non profit and operate that with ownership as an IBC (International Business Corporation) in some privacy haven, or Russia, or Yemin or somewhere (if those places have privacy laws???)

Those willing to go beyond that could be good partners for real estate investors.Traditional banks/Local Banks and non-bank lenders - If they are a portfolio lender, meaning they actually hold on to the loan and don't just collect your payment, then they have the ability to be flexible.