Sanders’ hit on Clinton not the first, or likely the last

DES MOINES, Iowa (AP) — Bernie Sanders' claim that Hillary Clinton isn't qualified to be president landed with a boom this week. The blow was far from the first — and won't likely be the last — from the candidate who pledged to stay away from negative campaigning.
The Vermont senator kicked off his insurgent presidential bid last year with a pledge to focus on issues over character attacks and boasted often that he's never run a negative ad. But for months Sanders has sharply criticized Clinton, slamming her for supporting the war in Iraq, for her record on trade and most aggressively for her lucrative paid speeches before Wall Street bankers.