The Comeback: New Poll Shows Concerns of American Middle Class

A bit fewer than half of Americans count themselves as middle class -- but many of them aren't sure how long it will last: Among people who say they're in the middle class now, four in 10 also say they're struggling to remain there in this difficult economy. Watch "ABC World News With Diane Sawyer" this week for our series "The Comeback: Saving America's Middle Class" A big factor: educational attainment. Among middle-class Americans with college degrees, 75 percent say they're "comfortably"...Full Story