flb_78 wrote: The National Debt is money that is borrowed by our government from foreign governments to run our government and pay for all of our "entitlements".
This is true, but doesn't paint the whole picture.
The effect is the same, but the method is different. Our government doesn't send an ambassador to Germany, for example, hat in hand, to ask for billions of dollars in loans. Instead, our government decides they need to spend billions or trillions of dollars that they do not have. Instead of cutting spending or raising taxes (to an extent), the government prints IOUs in the form of Treasury Bills. The government then auctions the Treasury Bills to ANYONE who want to purchase them.
The Treasury Bills represent a fixed dollar amount that is being loaned to the U.S. Government. The Treasury Bills draw interest. The interest is paid as the Treasury Bills mature. Our National Debt is the value of all of these outstanding Treasury Bills. When reading about the National Debt, you will encounter references to the "cost of servicing the debt". "Servicing the debt" means paying the interest on these Treasury Bills. Remember, the government is paying the interest, but often not paying down the debt.
In an oversimplified example, let's say that the U.S. Government needs to spend $1,000. The government has some options on where this $1,000 will come from, but most often, they choose deficit spending (spending money they do not have, or more correctly, spending the tax dollars YOU have not paid yet). The Government prints up a Treasury Bill with a face value of $1,000. They put this Treasury Bill up for auction. Whoever "wins" the auction for this Treasury Bill pays the $1,000 and gets the Treasury Bill. The holder of the Treasury Bill is entitled to collect interest on the Treasury Bill until the original $1,000 is repaid to them by the government.
Again, this example is oversimplified, but describes the overall process. The reason these are sold in an auction is that interest rates fluctuate. One Treasury Bill will not draw the same amount of interest as another Treasury Bill because the Bill's interest rate gets set when it is auctioned. Whoever is willing to buy the Treasury Bill at the lowest interest rate "wins" the auction, and purchases the Treasury Bill.
The problem with this whole scheme is that our government never want to pay off these debts that the Treasury Bills represent. Let's say the holder of our example $1,000 Treasury Bill holds the Bill until it matures, and then cashes it in. The holder gets their $1,000 back, plus all the interest they received while holding the Treasury Bill. For a fraction of a second, the National Debt has decreased by $1,000, since the government paid off that $1,000 it owed to the Treasury Bill holder. Unfortunately, in the next fraction of a second, the government prints another Treasury Bill with a face value of $1,000 and auctions it off to whomever will buy it.Now, the national debt has not decreased, and has in fact increased because of the interest the taxpayers will have to pay on this new Treasury Bill that the government has sold, and which represents the original $1,000 that the government has already spent.
Imagine having a credit card with no credit limit. You can charge up whatever amount of debt you want as long as two things happen: First, you must be able to pay the interest on the credit card debt. Second, your creditor must continually be interested in extending you credit. Some officials in our government believe that the amount of the debt is irrelevant, as long as we are able to service the debt (pay the interest on it). In this fashion, inflation will always make it cheaper to pay off the debt in the future than it would be to pay it off now.
Where China and other foreign countries come into this picture is that other governments are buyers of our Treasury Bills. Our government will sell a Treasury Bill to anyone. Because of the sheer scale of Treasury Bills in existence, other governments are the largest holders of our debt. The other governments get income in the form of interest payments and they get the security that our government is unlikely to default (stop paying the owed interest) on these Treasury Bills. Their currency is more likely to collapse than our currency (at least for now).
Again, this is massively oversimplified. I just wanted to describe the mechanism by which our government has come to owe so much money to other governments (or to any other entity that buys and holds Treasury Bills).