Problem: What is the main idea in the text below?
There is a race in contact with this country which, in all things except that of simply making fierce war, is not only our equal but perhaps our superior. I mean the yellow race; the Mongol race. They outnumber us largely. They may pour in their millions upon our Pacific Coast in a very short time. Are the states to lose control over this immigration? Is the United States to determine they are to be citizens?"