Greg Ip gave us another rendition of this old scare story in a Wall Street Journal column. The argument is that the interest paid on US government debt will soon impose an enormous burden on the federal government, choking off spending on important government programs.

The key part of this story is that interest rates will jump at some point in the not too distant future. While this is in fact what the Congressional Budget Office predicts, it is also what it has been predicting even since the Great Recession, and consistently been shown wrong.

The key question is, why would interest rates rise? There are two stories where we see interest rates rise. One is that we start to see an uptick in the inflation rate. In that case, long-term rates would almost certainly rise since investors would have the option of getting a better return just by holding physical commodities. Of course, the Fed would almost certainly raise interest rates in response to higher inflation, which would more directly cause interest rates to rise. One point about higher inflation that is worth noting is that it reduces the real value of the debt.

The other reason interest rates could rise is that the Fed raises rates even in the absence of higher inflation. In that case, the Fed as a matter of policy would be increasing our interest burden. (Selling off its assets also has the same effect, since the interest on the assets held by the Fed is refunded to the Treasury.)

Arguably, the Fed's rate increases in the last year and a half have not been justified by higher inflation, as the inflation rate remains well below the Fed's target. It is striking that none of the deficit hawks, including the Committee for a Responsible Federal Budget, which is cited in this piece, have ever expressed concern about the higher debt service burden resulting from these interest rate hikes.


The deficit hawks have also never raised any concerns about the burdens created by government-granted patent and copyright monopolies. This is bizarre since these monopolies are an alternative mechanism to direct funding. The government could directly pay for research on drugs, software, and other items, paying for it through taxing or borrowing, or it can tell private companies to do the research and then give them monopolies to allow them to recover their costs. 

The deficit hawks hyperventilate endlessly about the former route of paying for things, but completely ignore the latter, even though it poses a much larger burden. In the case of prescription drugs alone, the burden is more than $370 billion a year (we pay more than $450 billion for drugs that would likely cost less than $80 billion in a free market). This sum is just under 2.0 percent of GDP and more than twice the interest burden net of money rebated by the Fed. The total cost from these monopolies, including medical equipment, chemicals, software, and other items would likely be more than three times the cost of drug patents.

Anyone who is seriously concerned about the burden of government debt on future generations must also be concerned about the burden posed by patent and copyright monopolies, if they are consistent. Of course, if their goal is simply to cut Social Security, Medicare, and other social programs then it is understandable they would not want to discuss patent and copyright monopolies.