If Every Millionaire...

There are about 2 million millionaires in the U.S., according to this subversive organization (the whole page is worth a look). If each followed the president's example and gave $10,000 for world health efforts each year, we'd have $20 bn to work with, or 20 times more than the World Health Organization's annual budget.

But, you say, how could we get all those millionaires to donate all that money?

Well, once upon a time governments got rich people to help society. They used an administrative technique known as a tax...