What that means is that the United States is fundamentally solvent!
CPA's and attorneys in the Miami area set up Florida LLC's for the purchasers of those homes, because they couldn't get loans as an individual. The banks then made the loans to the LLC's.
Why? Because they were foreigners from countries that weren't on the Visa Waiver Program, such as Mexico, Brazil and Argentina.
When the market balloon popped, the foreigners said "so sorry, the economy is bad here, we're going home."
The banks loved the fees on loans for Miami condos selling at $500-$1000 per square foot. Current prices now average $350 per SF.
Looks like a new bubble is born.