Clinton, Sanders spar over capitalism, gun control at U.S. debate

By John Whitesides and Amanda Becker LAS VEGAS (Reuters) - Democratic presidential candidates Hillary Clinton and Bernie Sanders sparred over the merits of capitalism on Tuesday and traded barbs about their credentials on gun control during a tense debate aimed at appealing to liberal-leaning U.S. voters. Clinton, who is trying to slow momentum from her chief rival for the Democratic presidential nomination, directly attacked the U.S. senator from Vermont for saying the United States should model its economy after European countries such as Denmark, Sweden and Norway. "I think what Senator Sanders is saying certainly makes sense in the terms of the inequality that...