President Barack Obama and his Republican opponents in Congress enter a crucial week in the "fiscal cliff" impasse with more than just differences over taxes to bridge: Also in the way is pervasive mistrust among members of Congress that discourages big concessions for fear the other side won't reciprocate. That distrust is fueling doubts among Republicans and Democrats about relying on the other side to live up to any bargains struck now on deficit reduction in the future, Capitol Hill aides say. Because resolution of the immediate cliff issues depends in part on commitments by both sides to a framework for ... (full story)