There are big, important things. Often they are dull. There are small, unimportant things. Often, they grab the headlines. The big, important things are both “global” (the health of the world economy, climate change, global demography) and “parochial” (the economic situation of the United States, the state of American “hard” power, the current political polarization). The “big” things are worth thinking about, the “small” things not.
One “big” thing is the government deficits and national debt. Earlier in 2024, the Congressional Budget Office (CBO) projected a 2024 U.S. government budget deficit of $1.6 trillion; in mid-June 2024, it revised that to $1.9 trillion.[1] Even this is probably over-optimistic. It includes an assumption that the tax cuts passed in 2017 during the first Trump administration will be allowed to expire in the near future. Politically, this is a very unreasonable assumption. President Joe Biden has said that he would extend at least some of the tax cuts and Presidential-candidate Kamala Harris is currently expected to model her basic economic policy on that of the Biden administration. For his part, Donald Trump has pledged to extend all of the tax cuts. Fully extending the tax cuts would reduce revenue by $5 trillion over ten years.
The fundamental problem is an imbalance between spending and revenue. In recent decades, this has led to large annual deficits. The deficits have been covered by borrowing.[2]
What are the sources of these deficits? First of all, a large aging population has started relying on Social Security and Medicare/Medicaid.[3] Second, borrowing money requires paying interest. Even at low interest rates, a quantitatively expanding debt will increase the amount of interest that has to be paid. The CBO estimates that interest payments will rise from $892 billion in 2024 to $1.7 trillion in 2034. Higher interest rates, used to control inflation, compound this effect. At the same time, the United States has spent forty years cutting taxes.
The national debt of the United States—all the accumulated deficits—stood at about $20 trillion in early 2017. By mid-2024, it had increased to $35 trillion.[4] One budget expert judges that “the overall fiscal and economic environment is a lot worse” than before Trump and Biden occupied the White House.[5] The CBO has recently projected that the U.S. national debt—all the accumulated deficits–would reach or surpass $56 trillion by 2034. In 1999, the national debt amounted to 99 percent of Gross Domestic Product (GDP); in 2034, it projects that the debt will be 122 percent of GDP. “[T]he country’s fiscal backdrop is increasingly grim.”[6]
[1] The Biden administration blames the Republican tax cuts for the deficits and debt. However, the jump from $1.6 trillion to $1.9 trillion sprang largely from the Biden administration’s cancellation of student debt, from the military aid provided to Ukraine and Israel, and from unexpectedly large payments for Medicaid.
[2] That is, for decades now, Americans have wanted a bunch of stuff, but they haven’t wanted to pay for it. Instead of doing without any of the things that they wanted, they borrowed the money in return for I.O.U.s in the form of Treasury bonds. An I.O.U. is a promise to pay in the future. It has been a long-running complaint among what the great economist Paul Krugman calls “deficit scolds” that “we are leaving our children a mountain of debt.” That is true only if our children are willing to pay it. Such a willingness assumes that they are made of sterner stuff than their predecessors.
[3] The “Baby Boom,” born 1946-1963, retires between 2011 and 2030. Obviously, this problem will end one day.
[4] Just over half of the post-2017 increase of $15 trillion took place during the Trump administration ($7.8 t); just under half took place during the Biden administration so far ($7.3 t).
[5] Jim Tankersley, “Trump Tax Plan Could Add Debt by the Trillions,” NYT, 10 August 2024.
[6] Alan Rappeport, “U.S. Debt Set to Top $56 Trillion,” NYT, 19 June 2024.