There should be two ammendements to this bill if not more.
a) You must live in the home (owner-occupied), and
b) you must pay 50% more in property taxes than the current rate e.g. if the property tax rate is 10% you pay 15%.
I think the article said they must live in the home 150 days per year.
A bank in Florida originated mortgages on Miami Beach condos to foreigners. These units were going for $500-$1000 a square foot.
When the economy soured, they boogied back to their home countries and defaulted on the loans.