Very interesting research from Cornell which demonstrates that a large number of Americans favor curtailing the civil liberties of Muslim Americans. The link below provides a press release and two pdf file links to the research findings. The study looked at political affilation and religion, among other factors. Interestingly, those who are more conservative and religious, for the most part, favor curtailing the civil liberties of Muslim Americans. From a historical perspective this should not be surprising considering what happened to German-Americans during WWI and Japanese-Americans during WWII.
http://www.news.cornell.edu/releases/Dec04/Muslim.Poll.bpf.html