By Paul Krugman – The New York Times.

At one point during Wednesday’s Republican debate, Ben Carson was asked about his involvement with Mannatech, a nutritional supplements company that makes outlandish claims about its products and has been forced to pay $7 million to settle a deceptive-practices lawsuit. The audience booed, and Mr. Carson denied being involved with the company. Both reactions tell you a lot about the driving forces behind modern American politics.Read more »