"Be careful what you wish for" goes the ancient Chinese proverb. The United States government, pushed and prodded by its industrial leaders to get the Chinese to raise the value of the Yuan, should heed these wise words.

The goal, of course, is to make U.S. goods and services cheaper, thereby improving the balance of trade. The problem is that it makes everything cheaper.

It is true that it would support the remaining manufacturing base, software companies, commodities and consulting services. However, this is but a portion of what we have to offer.

What happens if the Yuan increases by 20% against the dollar, and they decide to buy International Business Machines (IBM) the company, not just IBM mainframes? This is not so far fetched. Lenovo bought the ThinkPad notebook computer division from IBM and now it sells Lenovo ThinkPads to us. They would be able to buy IBM 20% cheaper than you or I could buy it.

I wrote yesterday about the recent Chinese veiled threat to dump its dollar holdings if the U.S. raises tariffs in hopes of coercing them to let the Yuan rise against the dollar. Today I had the opportunity to pick the brain of an expert on the topic, Brad Setser, Chief Economist at RGE Monitor and former acting director of the Office of International Monetary and Financial Policy at the U.S. Treasury.

My first question to him was, is this a credible threat? Setser didn't believe so, because it would represent a huge shift in China policy. The Chinese government, he explained, has shown a consistent bias toward supporting the country's exports, even at the cost of holding onto dollars as their value drops against other world currency. In fact, China continues to bolster its dollar holdings, adding $350-400 billion this year alone.

Setser went on to explain that, in his opinion, the Yuan was currently undervalued against the dollar by approximately 30%. If such an imbalance were abruptly corrected it would dramatically disrupt their export market.

He went on to say that China is in effect swallowing huge losses by holding dollars in order to support their exports, but the current regime has not indicated any likelihood to change that position.

However, he cautions, tensions between the two countries are growing, as the Chinese government takes umbrage at the growing movement in the U.S. to address the trade imbalance with legislation.

My take from this discussion: a change in the status quo is not in the offing, but the trade discussions in Congress are being watched carefully by the Chinese government. In the political season we are entering, pro-tariff campaign rhetoric could bring about more threats of reprisal.