By CNN's Jack Cafferty: Europe's financial crisis is a warning siren for the U.S., but many Americans aren't listening. A new Gallup Poll shows only 16% of those surveyed say they're following the news about Europe's crisis "very closely." 33% say "somewhat closely," 21% say "not too closely" and 29% "not at all." This poll … Continue reading Most Americans aren't too focused on Europe's financial crisis. Should we be?