Americans are currently undecided whether or not to make exceptions to some of our civil liberties in order to detect and stop Islamists from attacking us. I think both sides of the argument have their points, and for now, it will be settled in the courts.
It is a slippery slope to allow the government extra powers, but on the other hand, there is no question that we are dealing with enemies that are not hampered, as we are, in having an open society, and no question that being able to tap suspect communications without warrants is an effective tool.
I predict that if the Islamists have another large success in the USA, the more people will expect the government to do anything it can to protect us. I further predict that the longer we are free from Islamist attacks in this country, the fewer citizens there will be who will be willing to give the government extraordinary powers.
To me, it is a teeter-toter affair, and the country is in an uncomfortable balancing act for the moment.