There are a lot of uncertainties permeating the market right now, not the least of which is healthcare reform. Will that reform entail a public option that could add $1 trillion to the deficit?  How is reform going to be financed?  And is it going to mean higher costs for employers across the board, or just the healthcare insurers?

Investing is made infinitely more difficult when 18% of U.S. gross domestic product (GDP) is hanging in the balance.

And you still have to consider:

• That unemployment is likely to keep rising, perhaps over 10%.
• That the U.S. Federal Reserve’s policy of quantitative easing is slowing down.
• That there is almost certainly a second wave of home foreclosures on top of the current commercial real estate epidemic.
• And that retail sales are still a long way from recovery.

There is also reason to believe that the U.S. dollar will continue to be weak, though it probably won’t sell off precipitously.

The U.S. dollar has weekend against the Euro lately, having fallen 0.8% Friday.  Technically speaking the chart shows a traditional “cup and handle” formation that could lead to an acceleration of the dollar’s downward trend.  Gold prices, up about 13% Friday, confirm this trend and could soon break through the $1000/oz resistance.

Fundamentally, if the economy – encumbered by high unemployment and a relapse of the housing market – does not pick up the dollar could be further imperiled.

Weakness in the dollar will also be affected by the Fed’s withdrawal of liquidity, which is likely to proceed at a gradual pace.

Finally, diversification away from the dollar among the world’s central banks is taking place, albeit at a slower pace than many analysts have suggested, and that too, is weakening the dollar.

Let’s concede that there is no currency that could supplant the dollar as the world’s major reserve currency. So, it’s unlikely that the world’s central banks will simply abandon the dollar anytime soon. However, we must also acknowledge that a reduction in the weightings of the U.S. dollar within central bank reserves is already underway.

An Aug. 14 article by BNP Paribas currency strategist Ian Stannard in Euromoney recently described this gradual shift in currency reserves.  The article noted that only 62.5% of global currency reserves are in U.S. dollars, down from about 66% in 2005.

So I do not anticipate a sudden shift in central bank reserves, but rather a continuation of the measured restructuring we’ve seen so far. Thus, the slow weakening trend in the U.S. dollar is likely to continue.

So, in this very uncertain investment scenario, I prefer to go for more secure returns in bonds.  And we can achieve great diversification at a cheap cost with the iShares iBoxx $ Investment Grade Corporate Bond Fund (NYSE: LQD).

For starters, its weighted average coupon of 6.26% offers a current yield slightly north of 6% at today’s prices.  Investors are assuming interest rate risk, which means that if interest rates climb, the value of the bond has to come down.  But in the short term, there is no immediate threat of inflation.

Looking at the major holdings of the fund – which has no single position that accounts for more than 1.26% of its total holdings – I see some names that have demonstrated continued stability and others that have shown recent signs of improvement, such as American Express Co. (NYSE: AXP).  So I do not expect any major credit spread hiccup here.  I certainly do not see any hiccup that a 6.26% coupon would not compensate for.

For an additional hedge against dollar weakness, I suggest you revisit my June 8 recommendation of the iShares SPDR Gold Trust ETF (NYSE: GLD). You may also consider buying a bit of the PowerShares DB US Dollar Index Bearish (NYSE: UDN) fund.  Do not go overboard. Err on being light, rather than heavy on hedging, since timing currency moves is very difficult.

Recommendation: buy iShares iBoxx $ Investment Grade Corporate Bond Fund (NYSE: LQD) at market.  Consider hedging part of the US dollar risk by buying the iShares SPDR Gold Trust ETF (NYSE: GLD) and PowerShares DB US Dollar Index Bearish (NYSE: UDN). Both funds should account for a fraction of your position.  Have a 5% stop loss on UDN (**).

Source: Buy, Sell or Hold: The iShares iBoxx $ Investment Grade Corporate Bond Fund

“What’s different?” asked colleague Manraaj Singh at this morning’s conference.

Early every morning, while most Americans are still in their beds, your editor joins a group of analysts and financial journalists to discuss the day’s news.

“What happened to the price of copper? Why are Asian stocks going down? Are they really going to cut rates today?” The answers are not always satisfying, but the questions keep coming.

And the question this morning was: what has really changed?

U.S. stocks held steady yesterday, but they’re down 5% so far this year. The dollar held steady yesterday too, but it is down for the year too – about 6% against the euro and the yen. The Europe- or Japan-based stock market investor has lost more than 10% of his money.

Meanwhile, the fall of the dollar has increased prices for imports. While the United States used to “import deflation” from Asia and elsewhere, now it imports inflation. Prices are rising all over the world.

Yesterday, European producer prices were reported rising at 6.1% per year. High prices have caused the biggest drop in retail sales on record. And yesterday, they had to call out the riot squad in Brussels, to battle fishermen who were kvetching about high fuel costs.

In China, retail prices are rising at an 8.5% rate – the fastest in 12 years.

In Russia, prices are going up at a 14.39% rate.

In Vietnam, the consumer price inflation rate is running at 25%.

In Venezuela, the inflation rate is 29%.

And in Zimbabwe…well, Zimbabwe is another story altogether, with inflation going up so fast they can’t even measure it. Prices are said to be increasing at 160,000% to 200,000% per year. But who can tell? There’s nothing to buy.

Back in Asia…the region’s central banks had hoped that Milton Friedman was wrong. They had hoped that a worldwide economic slowdown would reduce domestic inflation rates. So, they left their lending rates low – considerably lower than the CPI – in order to keep their economies turning over. In Thailand, for example, the central bank lends at 3.25%, while consumer prices rise at more than 6%.

Sound familiar? The United States also keeps its key-lending rate well below the inflation rate – and for the same reason. The Fed lends at 2%. Inflation was last clocked running twice as fast.

We pause here in honest admiration for our fellow investors – the kind of admiration we feel for members of a bomb disposal unit, or a knife-thrower’s assistant. What are we to think? They are lending money to world’s biggest debtor – the U.S. government – for 10 years at 3.94%. That’s yesterday’s yield on the 10-year T-note. If nothing changes, they will get nothing for their trouble. If inflation rates rise (or just happen to be understated), or the dollar falls, the speculation will blow up in their faces.

But along comes Ben Bernanke, with an apparent change of brain. Now, says the captain of the Fed’s rapid response recession-fighting team, further inflation is unwelcome in the United States of America. Supposedly, these words alone took $5 off the global oil price.

But what really has changed? Can the U.S. central bank really begin fighting inflation in a serious way?

The feds have discovered the same two things that their Asian central banker colleagues have found out: that the globalization street goes both ways…and that Milton Friedman was right. Inflation is a monetary phenomenon, observed Friedman. When you increase the amount of money in circulation, ceteris paribus, prices are going to go up. That they didn’t go up much in the last 15 years is merely because there were important other trends going on – notably, globalization, which was driving down prices. But now, traffic on the Avenida de Globalization is going in the other direction. And just as it was very difficult to cause inflation while globalized markets were cutting prices, so is it very difficult to stop inflation when globalized markets are increasing them.

*** Can the Fed really begin fighting inflation? Ah, dear reader…do you see the cruel twist to the story?

While the Fed couldn’t seem to create inflation in those wonderful years of the Great Moderation…now, it probably can’t do much to stop it. The U.S. imports an Everest of stuff from overseas. And stuff made overseas is becoming more expensive. The Fed can raise rates to try to cool the U.S. economy and reduce the amount of stuff Americans buy. But those darned Asians and Europeans can still buy more, and prices can still go up.

Besides, any further ‘cooling’ of the U.S. economy is risky. It could freeze up.

The crisis is said to be over on Wall Street. But the Financial Times says new IPOs are being taken off the schedule…short action on Lehman Bros. is at a record level (speculators are betting that the company is going down) and Moody’s says it might downgrade credit ratings for MBIA and Ambac.

The money just isn’t flowing as fluidly in Manhattan as it used to. An AP story tells us that apartment sales were off 21% in the first quarter. And over on Long Island, where the Wall Streeters have their weekend homes, lenders are said to cutting off home equity lines.

In the center of the country, bankruptcy filings are up 27% in Illinois. And out in Las Vegas, the mortgage fraud capital of the world, a $5 billion casino project has just been cancelled.

And this just in – California is officially suffering a drought.

Under these conditions, we’d expect Ben Bernanke to make some gestures toward protecting the dollar and reducing inflation. But we’d also expect that most of the air coming from the Fed will be hot, not cold.

“The Fed seems to be trying to create a situation whereby they are seen to be fighting inflation, simply by not lowering rates any further,” says MoneyMorning. “This is because, while the Fed may have no interest in fighting inflation, they have a big interest in fighting what they call ‘inflationary expectations’. In other words, they are more interested in fighting people’s perception of the problem, rather than the problem itself.