The bank crisis... the banks will get over it. Remember the bad loans to the tech industry, third-world countries, and the Resolution Trust fiasco of the 1980s? The banks always recover. So does Wall Street.

The housing market crisis... it too will eventually go away. Property booms are followed by property busts. It has always worked that way.

The economic slowdown... could be more short-lived than most think. Fed Chairman Bernanke is pulling out all the stops to avoid a severe U.S. recession.... and the stock market likes what he's done so far. Economies expand, then they contract — that’s how economic cycles work.

The real long-term threat to the United States is something most Americans are not well aware of. I'm talking about the systematic decline in the value of the U.S. dollar against other world currencies.

Tell me if this sounds familiar:

It's the end of World War II. First, the United States defeats Japan in a war they started. Then the U.S. comes to the aid of its allies in Europe and saves Europe from Hitler. The year is 1945. America has proved itself as the new world might, as the reins of military and naval power shift from Great Britain to the United States.

Following the end of the World War II, an economic boom starts in the U.S. that will last for years. The U.S. manufactures goods and the remainder of the world wants to import them. American dollars become the most wanted currency in the world. And, for decades to come, America is a trade creditor nation (which means it exports more than it imports).

Countries around the world, in awe of the American economic machine, actually start adapting the U.S. dollar as their reserve currency. Who wants gold as a reserve currency? The real money is the U.S. dollar, so the thinking went. By the 21st century, approximately 70% of the countries in the world have somehow tied the U.S. dollar to their reserve currency systems.

Fast-forward 50 years:

In the mid-1990s, halfway around the world, another economic machine was just waking up. Thanks to a younger, most capitalistic regime, China's manufacturing sector starts to hit full stride. Now, the world is importing cheap Chinese goods instead of American goods and even American companies are opening factories in China to make their own goods there for shipping back to America.

The huge amount of goods being imported into the U.S. takes America from a creditor nation to a debtor nation — it now imports more than it exports. Today, China sits with over a trillion U.S. dollars, which it has accumulated for all the goods it sent to the U.S., and, all of the sudden, American dollars are not in demand anymore. Problem is, there are too many greenbacks in the world money system.

Some countries have started to move away from the U.S. dollar as their reserve currency. Other oil-producing countries have started to make "noise" about wanting euros for oil as opposed to dollars. And as for the U.S. government, it spends about $1.5 billion more a day than it takes in. Hence, we need foreigners to buy our debt instruments so we can finance our deficit.

With Bernanke moving interest rates so low, and with foreigners so worried about the value of the U.S. dollar, the long-term threat I see for America is a devaluation of its currency. Should this happen, interest rates would have to rise to attract foreigners back to the bonds we so desperately need to sell to finance our deficit. And that is when the U.S. economy will really get hurt. For the short term, the stock market tells us that everything is okay. But for the long term, the declining U.S. dollar will become a real problem for America.

Finance Products on our marketplace

The Only Real Long-Term Threat to the U.S. Economy — by Michael Lombardi, CFP, MBA Stock Market Investing Advice- Profit Confidential Investment Newsletter - Profit Confidential