The news from Lehman (NYSE: LEH) was not bad enough. The brokerage will post a loss of $2.8 billion and raise $6 billion in new capital. Now word comes that big Swiss bank UBS (NYSE: UBS) is in trouble again.

According to The Wall Street Journal, "When it proposed its capital-raising plan to investors, UBS said further write-downs may hit earnings, and it said in May that some asset classes continued to deteriorate and will hamper future earnings."

Of course, the news begs the question: how bad can things get for US banks? Citigroup (NYSE: C) may be the prime example. It still holds billions in mortgage paper and LBO debt, and it could face charges on credit card defaults. The market has already started to price more trouble into the US bank's stock.

Citi is now trading below $20 for the first time since March when a panic hit a number of large US bank shares. The stock recovered to almost $27 in late April. Several other American banks have seen their shares drop by similar amounts.

Citi's stock probably has not found a bottom. If the bank reports weak numbers in the next two quarters, it may have to raise money the way Lehman did. Substantial dilution could take the shares down another 10% to 15%.

Douglas A. McIntyre is an editor at 247wallst.com and the author of the Ten Stocks Under $10 letter.

Ted Allrich is the founder of The Online Investor and author of the just released book: Comfort Zone Investing: Build Wealth And Sleep Well At Night. In this weekly column, he'll offer advice to investors who are just getting started.

Merrill, Lynch (NYSE: MER), Lehman Brothers (NYSE: LEH) and Morgan Stanley (NYSE: MS) are on the watch list at Standard & Poor's, the ratings agency that can make raising money very expensive for companies that get downgraded. Of the three, Lehman appears the most shaky with many expecting it to report a loss for the first time since it went public. Word is that the firm is trying to raise $3 billion to $4 billion to keep its capital base healthy. It's out there competing with many banks and insurance companies working on the same thing. Merrill Lynch already has its money in the bank but may need more.

The real problem all these firms have, along with all financial institution money raisers, is that they are loaded with securities they can't sell. They're called mortgage-back securities or Collateralized Debt Obligations (CDO's) or SIV's (Structured Investment Vehicles) or some other acronym. They all mean the same thing: no buyers anywhere at any price. It reminds me of the high inflationary days of the 70's when selling a 30-year bond was impossible. The joke was: What's the difference between a long term bond and VD? You can get rid of VD.

Merrill Lynch and Co., Inc. (NYSE: MER) CEO John Thain said today that the risk in the housing market is "much lower" than it has been recently as the credit crisis in the U.S. is "getting better." Leave it to the leader of a company which has written off over $30 billion in mortgage lending investment to make this claim. But the thing is, could he be right?

Although Thain said "economic pressure" will remain high over the next year, he expressed confidence that the end of the housing bubble, which is still popping in many parts of the country, is now in sight. Thain also indicated that food prices and shortages as well as higher unemployment will continue to have an impact on the U.S. economy. Of course Merrill has had three quarters of disastrous results like other large investment banks, and the company is still toiling with the idiocy of incredibly risky investments that have left it weakened financially.

Even if Thain had been hired by Citigroup, Inc. (NYSE: C) last year, he'd be in the same mess in the same industry. I'm not sure what "much lower" risk in the housing market means, although he's probably talking about his company's reduced exposure to those SIVs and other vehicles from the Flintstone era that start off fast before the wheels fall off.

I hope Thain is correct in his assessments, and Merrill Shareholders are probably wanting the same thing, just much more badly than myself.

The troubles never end for Countrywide (NYSE:CFC), but that may be its own fault. According to The Wall Street Journal: "A federal judge has authorized an in-depth probe of Countrywide Financial Corp.'s mortgage-processing systems by bankruptcy investigators hunting for evidence that the big mortgage lender has systematically abused borrowers."

Who knows? Maybe Bank of America (NYSE:BAC) will still walk away from its deal to buy the mortgage company.

Among the charges is that Countrywide got people into mortgages and pumped up fees as customers made payments late. The court is concerned that the "fees" were no accident.

Similar charges keep jumping up as the world learns more about how Countrywide was run. As the old saying goes, where there is smoke there is fire. The number and depth of concerns about how the company made loans and handled customers appears to increase by the day.

The top executives at CFC are getting rich packages as the buyout by Bank of America continues. But, even the bank only has so much patience if the legal bills keep piling up.

Douglas A. McIntyre is an editor at 247wallst.com.