Are you interested in the topic of immigration to the U.S., but not sure how to narrow it for a paper? Take a look at this directory about U.S. immigration from Google.com, and you'll get some ideas for manageable subtopics.
Perhaps you're interested in the topic of ethnic studies, but you're not sure how to start narrowing a topic for a research paper. Take a look at this directory on ethnic studies from the Open Directory project, and you'll find plenty of good ideas to get you going.
Moore argues for "new blood." How about some opposing views? This site, ImmigrationsHumanCost.org, presents a diametrically opposing view. Browse around until you are comfortable with this organization's position. Which view do you favor and why?
It has been argued that racial whiteness is a social construct and not a naturally occurring phenomenon. Would you like to explore resources revolving around the social construction of the white race? Ok then, click here and you'll find a detailed syllabus on the subject from a course taught at the University of Massachusetts, Amherst.