Klaus, if you are trying to imply that the US does not want help from any other countries, you are dead wrong. As someone who is currently less than 2 miles from the WTC, I have been made well aware that there is more help than needed at the disaster site. If there wasn't enough help, I sure as hell would not be here posting any messages. They have even asked people in the area to stop bringing supplies, as whenever they ask for something, all the supply centers are almost immediately flooded with that item.
The US appreciates all the support from around the world. But the truth is, the disaster site is not enormous. Right now there are 4000-5000 workers in a few square blocks. So there really is no need for any more help at the wreckage site right now. Please do not look at this as the US thinking it is "too good" for anyone's help.