By Fareed Zakaria, CNN

I know you have all heard so much about the debt ceiling that you're probably exhausted. But I think it's important to point out a few facts because this matter has been so clouded by rhetoric.

Did you know that there is only one other country in the world that even has a debt ceiling? That's Denmark, a strange anomaly, and its debt ceiling is deliberately kept very high so that it will never need to be raised.

Why does no one else have a debt ceiling?

Because when a legislature votes to authorize spending at a certain level but authorizes tax revenues at a lower level, it is assumed that the government will have to borrow the difference.

The vote to have higher expenditures than tax revenues is - in effect - a vote to borrow money to cover the difference.

And in the United States, Congress - including Republicans - voted for a budget in which expenditures exceeded tax revenues.

The logical consequence of that budget - again, passed by Republicans and Democrats, is that the government has to make up the difference by borrowing.

To come at it now after the budget has been passed is like getting your Visa bill and calling up the company to say, "Actually we don't want to buy all that stuff we bought."

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That's not how it works. First you pay the bill, then you can change your spending habits.

So why do we have a debt ceiling?

Ironically, it was put in place during World War I so that Congress didn't have to authorize every new issue of debt. It was assumed that it would be a formality to raise it. Since 1960, the debt ceiling has been raised 78 times.

My basic point is that this is a crisis that we have manufactured out of whole cloth. We have created a circumstance in which the world doubts our credibility, rating agencies are thinking of downgrading our debt and the dollar's role as the world's reserve currency could be jeopardized.

Please understand that none of these things are happening because the United States is running deficits. There was no indication - by any metric - that the United States was having difficulty borrowing money one month ago. In fact, the world has been lending money to the United States more cheaply than ever before.

iReport: Send your message about the debt debate to Congress.

We face downgrades and investor panic not because of our deficits but because we are behaving like deadbeats, refusing to pay our bills, pouting while the bill collector waits at the door.

We do have a large deficit and debt and we do need to get it under control. That the Tea Party has raised awareness about this is admirable. And I agree with their view that the current set of entitlements - Medicare especially - have to be reformed dramatically to get our fiscal house in order. But that is not an excuse to endanger the good standing of the United States.

First you pay the bills and then you figure out how to change your spending habits.

The tragedy here is that the damage may already have been done.

From now on, every time the debt ceiling needs to be raised, the world will wonder: Will the U.S. stand by its promises or will it break them?

Read: Political elders tell us what to do to resolve the crisis.

Something that was taken for granted - the credibility of the United States - is now surrounded by uncertainty. In her interview with me to be aired this Sunday at 10am ET/PT on GPS, IMF Managing Director Christine Lagarde says that "Global markets have always had a positive bias towards the United States but that is now eroded somewhat."

For this erosion, we have only ourselves to blame.

Tune in this coming Sunday at 10am ET/PT to watch more from Fareed on the debt ceiling and to listen to his full interview with Christine Lagarde. In the meanwhile, follow Fareed on Twitter and Facebook, and bookmark the Global Public Square.

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