> Buying a home is fairly straightforward and has almost no state verification of any piece of it, at least in the US.

you mean the purchase deed isn't registered anyplace?

or you mean that the mortgage company didn't do a credit/background check on the buyer before granting the mortgage? Which includes some level of providing a state-backed identity card?

Or do you mean it's easy to buy a house for cash without hassle in the US? Just a suitcase of $100 bills? I'm assuming you've tried this recently?? (and the house cost more than 150K?