Price controls are back in the news again. A few weeks ago, President Joe Biden had advocated a form of rent control. Now Vice President Kamala Harris is arguing for a federal ban on “gouging” when it comes to “excessive” increases in the prices of groceries and food products. There is a suspicion that she would like such a law to extend beyond that area, but she may have backtracked on that after earlier criticism. And just what are “excessive” price increases? Doubtless all will be cleared up at Harris’ next press conference…