This deck of 48 "quiz cards" explores the U.S. Constitution in a lively Q&A format.  Sample questions include:  Must a president sign or veto every bill sent from Congress? Why are filibusters allowed in the Senate but not in the House? Can a state require candidates for office publicly declare their religious affiliation? Is it possible to sue a member of Congress for libel or slander?  (Answers appear on the reverse side of each card.)