The Carpetbagger Report points out the weird incongruity between two facts. On the one hand, the high (relative) degree of assimilation/economic opportunity of Arabs and other Muslims in the US, a fact likely correlated with the relatively lower rate of homegrown Muslim terrorism here. And on the other hand, the xenophobic right's attempt to make life so miserable for Muslim immigrants, a policy that seems designed to ensure that we start having problems like certain countries in Europe.
(I'd note that opportunity and assimilation isn't perfect inoculation, but even so, it surely helps.)
Jim Henley had a post a while back in which he put muslims in the U.S. into three categories:
(i) unwilling to participate in jihad and willing to report to authorities on those who are willing to participate;
(ii) unwilling to participate in jihad but unwilling to report to authorities on those who are willing to participate; and
(iii) willing to participate in the jihad.*
He noted that while the unpleasantness visited upon muslims in the U.S. by (supposedly) random searches, bias, etc., might not be enough to push category (i) and (ii) into category (iii), but it very well may be enough to push category (i) into category (ii), which is almost as bad as he noted that alot of the foiled terrorist plots in the U.S. (assuming they were real plots) were discovered as a result of reports by other mulsims.
*obviously these categories are not exclusive, but nevertheless illustrate the point.