The myth is that if housing prices go up, Americans will be richer. What banks - and behind them, the Federal Reserve - really want is for new buyers to be able to borrow enough money to buy the houses from mortgage defaulters, and thus save the banks from suffering from more mortgage defaults.

A derivative is a bet on whether a stock, or a bond or a real estate asset, is going to go up or down. There's a winner and a loser. It's like betting on a horserace.

To the deficit commission, a depression is the solution to the problem, not a problem.

The one sure mark of a con, though, is the promise of free money.

The myth is that if housing prices go up, Americans will be richer. What banks - and behind them, the Federal Reserve - really want is for new buyers to be able to borrow enough money to buy the houses from mortgage defaulters, and thus save the banks from suffering from more mortgage defaults.

The aim of promoting low down payments is to push prices back up so that fewer houses are going to be in negative equity and fewer people are going to walk away from the mortgages. That will save the from taking a loss on their junk mortgage loans.

Mr. Trump wants to turn the U.S. economy into the kind of real estate development that has made him so rich in New York. It will make his fellow developers rich, and it will make the banks that finance this infrastructure rich, but the people are going to have to pay for it in a much higher cost for transportation, much higher cost for all the infrastructure that he’s proposing. You could call Trump's plan "public investment to create private profit". That's really his plan in a summary.