That's hogwash because, as you point out, those are ten year treasuries. The more debt you have means the more debt you constantly have to roll over at different interest rates. If these bonds carried lifetime interest rates that never had to be refinanced then I would agree with you. If we run the current debt up from 20 trillion to 50 trillion then at some point in the future those debts will be rolled over at the prevailing interest rates of the time and you could be rolling over current low rates of 50 trillion dollars in debt to 8% - 10% interest rates instead of where they currently are. The problem with liberals is they don't believe interest rates will ever rise again and can never reach the rates of the late 70's, early 80's.
First, we have obvious, pressing needs for public investment in many areas. In Washington, the aging
Metro is in such bad shape that whole lines may have to be shut down for maintenance. In Florida,
green slime infests beaches, in large part because failure to upgrade an 80-year-old dike or to purchase more land as a runoff area is forcing the Army Corps of Engineers to release polluted water from Lake Okeechobee. There are similar stories all across America.
So investing more in infrastructure would clearly make us richer. Meanwhile, as I said before, the federal government can borrow at incredibly low interest rates: 10-year, inflation-protected bonds yielded just
0.09 percent recently.
Put these two facts together, big needs for public investment, and very low interest rates, and it suggests not just that we should be borrowing to invest, but that this investment
might well pay for itself even in purely fiscal terms. How so? Spending more now would mean a bigger economy later -- with more people working and paying taxes, which would mean more tax revenue. While you are correct in pointing out that more borrowing means more debt, this additional revenue would probably be larger than any rise in future interest payments.
So, let's address some of your concerns:
We can’t borrow because we already have too much debt. What matters is the comparison between the cost of servicing our debt and our ability to pay. And federal interest payments are only 1.3% of G.D.P., low by historical standards.
Borrowing costs may be low now, but they might rise. Yes, maybe. But we're talking about long-term borrowing that locks in today's low rates. If 10 years isn't long enough for you, how about 30-year, inflation-protected bonds? They’re only yielding 0.64 percent.
Again, additional revenue would probably be larger from a more robust economy than any rise in future interest payments.