The Obamas should learn from their predecessors - while it's OK to get rich from political celebrity. It's not OK to get obscenely rich from it.
The gap between the city-state's wealthy and poor is huge - and no one wants to risk being left behind.
Who would pay $80 million for a David Hockney painting?
New York has lost its crown as home to the most ultra-rich people,beaten out by the rising tide of extreme wealth in Asia.
The party has been going for more than a decade. But a lot of Americans haven't been celebrating.
There are now more than 18 million people with $US1 million or more to spare,a new report says.