My favorite Aunt sent me this MSNBC Quiz, 20 Questions from the U.S. Citizenship Test.
Now, bear in mind the test itself is NOT Multiple Choice, but I guess NBC realized that people are far too stupid to get them right without choices. (Or maybe it's just hard to do a webtest any other way. You can say what are they, but then people like Koz will claim they would have gotten them right. Much better to make them actually guess.)
Anyway, I got 19 out of 20. 17 is passing, so I expect Americans to get that. Non Americans should still be able to get 14 or so.
Tell how many you got right in the Comments.