The world economy is getting rattled this week by the consequences of excessive government debt. Greece may be cut off from its international creditors, and Puerto Rico announced that it cannot make full payments on its massive debt. In both cases, years of excessive spending are sadly dealing a crushing blow to the living standards of millions of average citizens.

These jurisdictions have fallen into the abyss, but debt has risen to dangerous levels in many places around the world, including in our federal government. The root of the problem is Keynesian economics, which has taught governments since the 1930s that deficit spending is good for the economy. That message has been fiscal catnip for politicians, who have eagerly run deficits year after year, and built up debt to massive levels. To compound the problem, some economists—such as Paul Krugman—have been falsely recommending that we not worry too much about rising debt because it is “money we owe to ourselves.”
The effects of Keynesianism can be seen in federal budget data. From 1791 to 1929, the federal government balanced its budget in 68 percent of the years. But from 1930 to 2015, the government balanced its budget in just 15 percent of the years. The result is that federal debt has risen to levels unprecedented in our peacetime history.