Our biggest challenge is to eliminate the popular perception that economists don't have anything useful to say.

At the center of every recession is a serious imbalance in the economy and mirrored in the financial system. Think subprime mortgage and the Great Recession, or the technology bubble and the early 2000s recession. There are no such imbalances today.

In a normal time, I don't think economic policy makes a large difference one way or another. But in times of crisis it makes all the difference in the world.

Lenders look at potential borrowers from many angles before extending credit: How much of its income will a household need to put into debt repayment? How large is the down payment? Does the borrower have a job with a stable income? What is the borrower's credit score?

Indeed, the FHA was born out of the Great Depression, which was also caused in significant part by a foreclosure crisis. Mortgages in the early 1930s were mostly three- to five-year 'bullet' loans, which did not amortize and were due in full at maturity.

If Mr. Trump gets precisely the policies he says he wants, then the economy will suffer a recession.

No one should expect the value of their house to appreciate quickly - counting on your home to be a significant part of your retirement saving isn't a winning strategy - but it is reasonable to expect that prices generally will rise with at least the rate of inflation for some time to come.