In 10th convention speech, Bill Clinton faces tougher crowd

PHILADELPHIA (AP) — Bill Clinton was once the Democrats explainer-in-chief, electrifying the convention crowd with his support of President Barack Obama.
Today, he increasingly seems to be explaining himself.
In the four years since the party’s last national convention, the center of gravity in Democratic politics has shifted decidedly to the left. Clinton must finesse some of his administration’s biggest achievements, including a landmark free trade agreement and major crimina