Pakistan, Jan. 16 -- Donald Trump fancies himself as a great negotiator. But he's made at least two big mistakes that'll make it difficult for the US to come to a trade agreement with the Chinese.

Eventually, some sort of deal will be reached. Whether it will be honored is another matter. But whatever it turns out to be the talks would have been easier without these errors:

No. 1: Trump let the world know that he wasn't happy with the level to which the Federal Reserve had raised interest rates.

No. 2: The president has been a cheerleader for the stock market.

Both of these mistakes are completely understandable. As president, Trump wants the stock market to rise and for Wall Street to pay homage to his economic policies.

And, of cou...