Hello-back again with some more information but this time, it is for the foreign writer intending to sell their novels in the Usa. Please read the following: http://catherineryanhoward.com/2012/02/24/non-us-self-publisher-tax-issues-dont-need-to-be-taxing/ which will give you other links to follow regarding same.
To summarize, it tells you that you need to obtain your own tax identification number to sell in America for tax purposes because until then you may have royalties and other money withheld from you up to 30%. So it is important. You can as they have shown in the article obtain it over the telephone and also via typewritten form as well.
When I find some more, I will post. It helps you just as much as it helps me.