The Associated Press reports that Merrill Lynch & Co. (NYSE: MER) is in talks to accept a $5 billion investment from Singapore's Temasek Holdings. This is the latest in a string of investments from Asian and Middle Eastern government funds -- called Sovereign Wealth Funds (SWFs) -- which oversee between $2 trillion and $15 trillion.

Of the countries that are buying up big chunks of our financial system, Singapore is among the least threatening. I have visited there several times and find it a beautiful country. However, it has some puritanical social policies -- such as prohibiting people from chewing gum -- a ban it relaxed in 2002. I doubt its investment in Merrill will lead Singapore to impose its gum chewing ban on the U.S..

Merrill is soon to announce additional write-downs of assets thanks to the ratings downgrade of bond insurer ACA Financial Guarantee Holdings. One estimate suggested Merrill would write down $3 billion because ACA's lack of capital transfers the cost of bad Collateralized Debt Obligation (CDO) investments from ACA to Merrill.

But who knows? There's no reason to think we've reached the bottom -- of either the asset write-downs or the SWF buy-up of our banking system.

Peter Cohan is President of Peter S. Cohan & Associates. He also teaches management at Babson College and edits The Cohan Letter. He has no financial interest in Merrill Lynch securities.