I won’t sell a property unless it carries zero debt or if  I was forced to for some reason.

If so, have you contacted the debtor to try to arrange for settlement?

Both equity and debt are considered investments and any offering of investments, whether equity, debt or a hybrid must be either registered with the SEC or qualify for an exemption from registration.

See if the debtor has reaffirmed the mortgage.

That includes all lenders, you need to look at what the real cost is for renting money, if it's less than your usual cost, it's a good deal, if you can use the money for profiting in other opporunities, it's a good deal, do you really have a use for the money, can it pay off other debt or reduce expenses, if so, it can be a good deal.Leveraging, the balance between using your money and borrowed funds to optimise profits.

For every basis point that interest rates rise, the US government must pay an extra $3.1 Billion in interest on its debt, or in other terms a 1% increase translates into $310 billion in annual interest. 

you may get your principal back if you're lucky you may have to sit and wait while the debtor goes through their repayment plan only to end up in BK court again when they fail at that. you may get wiped out any number of scenarios. 

Filing bankruptcy creates an "automatic stay," which means that creditors (including a landlord) cannot take any action against the debtor (tenant) without court permission. 

It's possible to do background checks even without a SSN, so this is not a huge problem for us.Bankruptcy is a tool used to get out of personal debt or business debt.

Purchasing notes in default, without knowing the property condition, in states where laws favor debtors and renters, could be extremely high risk and extremely high returns, or, total wipeout.